Oil to gasoline mixing ratios for a grass trimmer

How much oil to pour into the grass trimmer per liter of gasoline

Gasoline mowers are fairly common tools used by garden and homestead owners for mowing grass and making hay. common names for tools are the terms “grass trimmer” and “lawn mower”. The main difference is hidden in the design of the motor. the expensive segment of the devices is equipped with four-stroke models, and the cheap ones. two-stroke. The latter option has advantages, including a small weight, ease of use, as well as a low cost.

The most important condition for two-stroke models is the preparation of the fuel mixture, based on the manufacturer’s defined proportion of gasoline and oil. The simplified design of the motor does not provide a separate channel for lubrication, so engine oil is added directly to the gasoline. Violation of the correct proportion leads to a significant reduction in the resource of the tool and even to its failure. Let’s understand what composition is required for gasoline trimmers, how to properly prepare the mixture and what it can affect.

Grass trimmer gasoline selection

For some reason everyone prefers to choose a brand of gasoline for brushcutter at his discretion. This is a wrong approach, because, first of all, you should carefully read the manual, which gives the manufacturer’s recommendations for the choice of fuel type. But this is also not a guarantee, because unleaded fuel can be sold under different brands (which differ in many manufacturers), significantly different in composition. Therefore, it is necessary to be guided by the basic characteristics in order to choose gasoline for a particular model of grass trimmer.

Manufacturers of gasoline tool manufacturers recommend using gasoline brand AI-92, but for more expensive types will need fuel with a higher octane number. AI-95. Any brand that has a number 90 or less is not suitable for petrol brushcutters as it will lead to quick wear and tear. The problem is due to unscrupulous fuel producers who sell a completely different brand under the guise of 92. We have the following situation:

  • The gasoline certificate recommends using gasoline with an octane number of at least 92;
  • The conscientious owner goes to the gas station, where the lowest price and with a clear conscience pours such fuel in brushcutter;
  • As a result, the service life is reduced, because AI-80 and AI-76 are often sold under the guise of AI-92.


To avoid such a situation, it is necessary to choose one filling station, which sells proven gasoline (this can be determined by the reviews of regular customers). It is also important where to fill the fuel after purchase. only metal containers should be used for this (plastic is prohibited).

Preferably, when it is possible to buy gasoline for the grass trimmer of high purity specifically for garden equipment. Then you can be sure of its quality and protection from counterfeit.

What to choose oil to fill in the grass trimmer or types of lubricants

Grass trimmers and lawnmowers are powered by two-stroke engines, which have a simplified design. Rarely, but there are trimmer models with 4-stroke motors that run on pure gasoline. Power units of two-stroke type do not have a compartment for filling the engine oil (oil sump), thereby reducing the weight of the tool and their cost. If the rotating parts of the motor will not be lubricated, then as a result they will quickly fail. To avoid this, the grass trimmer is not filled with pure gasoline, but with a mixture of oil. What oil to dilute with gasoline for grass trimmer?

To begin with, let’s remember or find out what types of oils by chemical composition are available:

  • Mineral fluids. designed for low-power, air-cooled machinery. This is the cheapest type of lubricant for engines
  • Semi-synthetic substances. they are used for equipment that has air and water cooling
  • Synthetic. suitable for all types of engines with different types of cooling. They do not require frequent changes, and this type of lubricant is several times more expensive than mineral and semi-synthetic

From the above, it follows that the grass trimmer is suitable for oil with any composition. mineral, synthetic and semi-synthetic. Oils with different chemical composition differs in price, so it is necessary to rely on the recommendations of the tool manufacturer when buying. The instructions indicate the advisory information about what types of oils are better to use. If it is a TC-W3 standard, then the composition of the substance is not so important. In this case you can dilute mineral, semi-synthetic and synthetic with gasoline.

This is interesting! The main thing when choosing oil is not to get caught on the fake, as today you can very often find different types of lubricating compositions for two-stroke engines, which consist mainly of low-quality petroleum products.

Block: 2/7 | Number of characters: 1943

Peculiarities of 2-stroke brushcutter refueling

Depending on the engine device, brushcutters are subdivided into two-stroke and four-stroke. In the first case, the piston in the internal combustion engine makes 2 moves per working cycle, and in the second case. 4 moves. Differences in the working principle of the engine and different approaches to filling the trimmer for grass.

Fueling a brushcutter with a two-stroke engine

The common household models of brushcutters usually use a two-stroke engine. A lawn mower does not need much power and speed, so it is quite suitable for the task at hand. The engine is also much cheaper and simpler. but it is topped up with a fuel mix of oil and petrol. Such fuel is poured into the carburetor and fed into the cylinder in the form of an oil-gasoline mist. That way oil lubricates all necessary parts, and in the process of working the engine burns off together with the petrol. To mix well with gasoline, it contains 20% solvent. But the mixture burns and emits a pungent smell and smoke, increasing the toxicity of the exhaust fumes.

Important! You have to use special oil for two-stroke engines for these brushcutters. To mix well with petrol, it contains 20% thinner.

Fueling a brushcutter with a four-stroke engine

Four-stroke engines are used in professional brushcutter models. They have high power and can work for long periods without interruption or refuelling. They also use gasoline and oil as fuels, but they are filled into different tanks. The engine exhaust emissions are less toxic because there is no oil in the combustion process.

Back to side note! As well as providing better environmental performance and less heat, four-stroke brushcutter engines are also more economical. They use much less fuel, saving up to 50% on gasoline and up to 80% on oil.

Block: 2/9 | characters: 1919

The engine is more economical to run

Depending on engine setup, brushcutters are available as two-stroke and four-stroke models. In the first case the piston in an internal combustion engine makes 2 strokes per working cycle, and in the second case. 4 strokes. Differences in engine operation principle determine different approaches to filling the trimmer for grass.

Fueling a brushcutter with a two-stroke engine

Household brushcutter models usually have a two-stroke engine. A lawnmower does not need very much power and agility, so it is quite suitable for the task at hand. Also much cheaper and simpler, this engine is filled with a fuel mixture of oil and gasoline. This fuel is fed to the carburettor and into the cylinder as a petrol-oil mist. So the oil provides lubrication to all necessary parts, and in the process of working of the engine it is burned together with petrol. However, the mixture burns and emits a noxious smell and smoke, which increases the toxicity of the exhaust fumes.

Important! You need a special oil for two-stroke engines for these brushcutters. The oil burns completely without smudging and has very low volatility. To mix well with gasoline, it contains 20% thinner.

Fueling your brushcutter with a four-stroke engine

Four-stroke engines are used in professional brushcutter models. They give you more power and can go a long time without stopping and refuelling. The engine models also use gasoline and oil as fuels, but are filled with different types of oil. This means that oil is not part of the combustion process, so the exhaust fumes are not as toxic.

Note! As well as providing better environmental performance and less heat, four-stroke brushcutter engines are also more economical. They use much less fuel. Savings are up to 50% on gasoline and up to 80% on oil.

Block size: 2/9 | characters: 1919

Oil requirements

The mix of oil and gasoline used in the brushcutter must comply with the prescribed specifications. It is important to note that domestic producers often label their products slightly differently from the American or Japanese classification. Russian producers of lubricants, as a rule, put the 2T marking on all oils intended for two-stroke engines. Often you can find oil cans marked “self mix” or “pre mix” on the shelves of stores. In the first case, this means that the oil does not require any additional manipulation, just pour the gasoline and oil in the same container, and mixing will occur without human intervention. In the second case, accordingly, the mixture should be shaken or agitated to bring it to the proper consistency.

As you can see, the existence of different classifications of lubricants suggests that the use of oils in two-stroke engines is necessary. This is explained by the fact that a fuel mixture without lubricant will fail pretty quickly in an internal combustion engine that will not be lubricated properly. Gasoline and oil form the necessary fluid that reduces detonation, removes excess waste (waste products from gasoline combustion) and protects the engine interior from wear.

It is important to keep in mind that using the wrong oil can cause the engine to break down or clog. Of course, it can be repaired, but in order to prevent possible breakdowns, and to reduce their probability to a minimum, it will be better to study the instruction manual, find out the volume of the two-stroke engine installed on the brushcutter, and use only gasoline and oil, which will fit all the parameters of this model.

Quite often in the recommendations section (and sometimes on the label), the manufacturer indicates the partner companies, whose gasoline and oil he recommends to fill their models. Most often, the fuel and lubricant recommended by the manufacturer will suit the trimmer for grass the best.

First of all, you should immediately exclude from the list of actively used lubricants all oil of unknown (garage, basement) origin. Usually it is not easy to dilute such oils because of unclear base, composition. As a rule, labels of non-branded producers do not contain a lot of information, covering only general information, without specifying. It is strongly not recommended to dilute and dilute such oils as AC-10 and ACZp-10. The origin of these lubricants is usually quite obscure, it is better to give preference to proven brands that are used every day by thousands of people across the country.

A distinctive feature of all oils for two-stroke engines is the fact that the producers dye them in a color that contrasts with gasoline. The liquid is translucent, viscous in consistency, slightly yellowish, but not thick. Usually it comes in three colors. red, green and blue.

Do not forget that the color scheme has no effect on the classification (as is often the case with antifreeze).

Never use an oil from a line not designed for grass trimmer. This can have an extremely negative effect on the operation of the power unit, leading to increased fuel consumption, soot on the spark plugs and a variety of other problems that will have to be identified and eliminated. It should be noted that if the fact of using oil that is not included in the tolerance is established, the seller has every right to remove the machine from the warranty. This means that you will have to replace the defective parts at your own expense, and no exceptions will help.

If the fluid you have purchased is not of the quality you specify (for example, too thin), never mix it with gasoline. The best way is to return such oil to the store, explaining the reason for return.

Block: 3/7 | Number of characters: 3864


Stricter criteria for choosing an oil component. In the best case it is a mineral or semi-synthetic motor oil recommended by the manufacturer intended for operation in high-speed two-stroke air-cooled engines.

The advantage of mineral oils is their lower cost. Their more expensive semi-synthetic and synthetic analogues compare favorably with the improved working characteristics and correspondence to the ecological standards.

  • retain their properties over a wide range of operating temperatures;
  • do not form fouling;
  • contain detergent, antioxidant, preservative, and other additives that are useful for the power unit’s operation.

Which oil to choose

For effective operation of the grass trimmer it is necessary to select oil for two-stroke engines. This is due to the absence of oil sump in such a device. Depending on the chemical composition of the oil the following classification is distinguished

  • mineral. based on petroleum distillate, suitable for equipment of small capacity and with air type of cooling, but requires frequent replacement and can only be used in good weather in the warm season;
  • semi-synthetic. suitable for air-cooled and liquid-cooled garden equipment;
  • synthetic. based on esters, they do not require frequent changes and can be used at any time of year.

Oil for 2-stroke engines is characterized by good solubility and full combustion feature. For grass trimmers, it is recommended to use a lubricant that is suitable for devices with an air-cooled system. Most often the package says that the oil is for gardening equipment and is labeled TA, TV or TC. The latter is especially preferable.

Often manufacturers of chain saws produce a suitable oil, so you can make the choice easier by selecting a liquid of the appropriate brand.

Standard proportions

Often there are problems with the proportions of oil and fuel for the reliable operation of a brushcutter. The reason for this is completely different information in the sources. You may encounter a difference in the ratio data by a dozen units, and sometimes by half. So you can’t help wondering how much oil you need for 1 liter of gasoline: 20 ml or all 40. But for that there is a technical passport for the product that you buy in a store. There should be a description of the device, the instructions for its operation and instructions on how to prepare the fuel mixture.

First of all, it is necessary to take into account the information recommended by the manufacturer, because in the case of a faulty trimmer you can present your claims to him and not to a third-party source. If there is no instruction in the manual, and especially if the manual is missing, it is recommended to look for another grass trimmer model from a more reliable dealer.

For all other cases, when you have a lawnmower model in your hands and there is no way to know its technical features, there are standard proportions of the most likely components of the fuel mixture for a two-stroke engine. Generally these units use AI-92 gasoline and special synthetic oil which contains solvent for better fuel mixing. Such oil evaporates slowly and has the ability to burn completely in the cylinder, leaving no soot behind.

The standard ratio of synthetic oil to petrol is 1: 50. This means that you need 100 ml of oil for 5 liters of petrol, so the oil consumption for 1 liter of petrol is 20 ml. Knowing the amount of oil needed to dilute 1 liter of fuel, you can easily calculate any rates when preparing fuel for grass trimmer. With mineral oils, a ratio of 1:40 is often standard. This means it requires 25 ml for 1 liter of gasoline, and 125 ml for a 5 liter liter canister.

During the operation of the lawnmower, a person with little experience in operating such equipment will not have difficulty determining and correcting the actual amount of oil needed for a particular model. It is only necessary to pay attention to the exhaust gases (their color, toxicity of the smell), stability of cycles, engine heating and the developed power. detailed information on what to expect when mixing petrol and oil in the wrong proportions is given in another section of this article. Variants of brushcutters with gasoline AI-95 are also available. You also have to take it into account.

If the manufacturer recommends a fuel with the same octane rating, you should follow the recommendation so that it does not reduce the life of the machine.

Rules of mixing

And now about how to mix the components correctly. But it would be more logical to begin with analysis of widespread, but absolutely unacceptable mistakes made by many owners of this mower. The following actions are considered to be fuel mixing mistakes.

  • Adding oil to the fuel already in the brushcutter’s fuel tank. It is not possible to obtain a homogeneous fuel mixture that way. It may work if you shake the trimmer for a long time afterward. But it is unlikely that someone will do this, considering the gravity of the machine.
  • Pour oil into the mixing tank first, and then add gasoline to it. Gasoline has a lower density than oil, so if you pour it in to the oil, it will remain in the top layer, i.e. there will be no natural mixing. Of course, it will be possible to mix then, but it will require much more energy than if you do it the other way around. to pour in oil to the poured gasoline.
  • Ignoring precise measuring tools to take the necessary volumes of the ingredients used. In other words, diluting the amount of oil or gasoline “by eye” is a bad habit when operating motor vehicles.
  • Take empty drinking water bottles for a fuel mix. Such a container is made of too thin polyethylene, which can dissolve with gasoline.

Bearing all the above in mind, we recommend using the following rules when mixing the fuel mixture for two-stroke grass trimmer engines.

  • Use only clean containers made of metal or special plastic for storing gasoline, oil, ready-to-use fuel mixture and for its preparation.
  • Use a watering can for filling petrol into the expansion tank to avoid spilling it, and for adding oil use a measuring container with volume indicators or a 5 ml and 10 ml medical syringe.
  • First pour petrol into the canister to prepare the fuel mixture, and then the oil.
  • To dilute the mixture, first pour only half of the planned volume of gasoline into a container.
  • Then add to the petrol all the amount of oil required for the mixture.
  • Thoroughly mix the contents of the dilution tank. It is best to stir in a tightly closed container in a circular motion. Do not use any object to stir the fuel inside the canister, because it is not known what material it is made of, what kind of reaction it may have with the ingredients of the mixture and how clean it is.
  • Add the rest of the gasoline to the mixed mixture and mix thoroughly again.
  • You can fill the fuel tank of a lawn mower with a prepared mixture.

It should be borne in mind that the prepared fuel mixture should not be stored for more than 14 days, as it loses its properties, stratifies and evaporates, which leads to changes in the proportions, and thus deteriorates the work of the trimmer for grass.

How to mix oil with gasoline for a two-stroke engine

The peculiarity of two-stroke engines is that the fuel is filled into the tank together with oil. Each refueling requires the fuel mixture to be prepared in proportions before operating the equipment. How to do it right? From our article you will learn how to dilute gasoline for chainsaws, grass trimmer and other garden tools.

It is recommended to buy unleaded gasoline to operate your gardening equipment. Otherwise there is a risk of engine damage. Manufacturers advise fuel with an octane number not lower than AI-90, better AI-92 or AI-95. See manual for specific recommendations for your tool. At the filling station, pour the necessary amount of fuel into the canister. It is desirable to use a metal canister: in such a canister there is no static electricity from friction and it increases the safety of use.

Use brand name oils for two-stroke engines, preferably API-TB or API-TC. The manufacturer should indicate the recommended brands in the tool manual. Also note their composition. Mineral oils are suitable for warm weather. Synthetic oils are better, they are less viscous and can be used even in freezing temperatures. Semi-synthetics are mineral oils with improved qualities, versatile for any season. To determine the temperature of operation, see the package. Also note volume. What matters is not the proportion of gasoline and oil for a chainsaw, but how much fuel mixture you need for one filling and how often you will work with the tool. If you have in your arsenal in addition to the saw another trimmer for the grass or gasoline shears and you use this or that tool several times a week, it makes sense to buy a large canister of oil with a volume of 3. 5 liters. For several mowing operations during the gardening season it is enough to take a 1 liter bottle.

Mixing oil and petrol

When you start working with a tool, there is always the question of how much oil to add to gasoline for a chainsaw or grass trimmer. It is important to remember that for two-stroke engines the ratio is 1:50, t.е. there is a ratio of 100 ml of oil to 5 litres of fuel. Why it’s important to follow the proportions? Excess oil contributes to carbon deposits on pistons and spark plugs, and its lack worsens the lubricating properties of the fuel mixture, which leads to the formation of scuffing on the piston group and increases the risk of engine failure.

The easiest way to find the right gasoline to chain saw oil ratio is with the graduated measuring jugs. They have a scale with marks on them that are easy to navigate. Before pouring gasoline and oil, make sure the container is clean. Do not get any water or dirt in the tank as this could affect the quality of the fuel mixture. First fill petrol to the proper level, then add oil. also to the correct level. To mix, tilt the container several times. The fluids will quickly mix and the mixture will take on a uniform color, such as green or red (depending on the oil composition).

Important to know! Never use plastic drink bottles for storing and mixing fuel mixture. Gasoline corrodes plastics. And even if the walls of the bottle seem to be intact, harmful components will get into the fuel mixture, and together with it into the engine. This is very bad for the carburetor.

Wearing gloves is recommended to protect hands from gasoline and oil. Also remember the elementary rules of fire safety. Mix the fluids outside so that gasoline vapors do not accumulate indoors. Do not smoke while working and avoid other factors that can cause ignition of combustibles and lubricants.

Pour the prepared fuel mixture into the fuel tank and close the cap tightly. If you have made more mix than you can use at one time, empty it into a separate storage canister or leave it in the mixing tank. Most importantly, keep the cap tightly closed. The ready mixture can be stored for two weeks and used for refueling without risk to the engine. The only condition. do not leave it in the fuel tank. If you will not be using the tool for a long time, use up all the leftovers or drain it.

Now you know how to dilute gasoline for a chainsaw so as not to harm the engine. Try to make it yourself. After you have made the fuel mixture a few times, you will know how much you need, so you won’t have any extra mixture. You can buy everything you need in our online store. Your power tool will work for a long time with a brand-name oil.

Oil for brushcuts. how to choose, what proportions to dilute

Many of you have in the household petrol tools, for example, in a private home can not do without a chainsaw. You know, to prepare wood for the winter, comes in handy at construction and repair, and in general, it is a very necessary tool. If your country house has a decent-sized plot, you just need a trimmer or lawn mower to deal with grass, which also run on gasoline.

Of course, you can buy them and electric, but not everyone likes to pull a 30-meter extension cord to mow the area overgrown with grass to the knee. That’s why most people prefer to work with gasoline tools. As you know, you need to add special oil to gasoline for two-stroke engines. Here we will talk about it, because it is a very important aspect, if you will not add oil and add in wrong proportions, then your engine will “croak” very quickly and your way will be to the service center. To avoid all these troubles, you have to add only good quality oil in the right proportions.

The most popular oil for chain saws, brush cutters and trimmers is from the famous STIHL. it is sold in two packages. 1 liter and 100 ml. For those who work a lot, a liter bottle is enough, but a small bottle is enough to “once cut”. A 1 liter capacity costs 250, and 10 ml capacity is 60. If you take a big amount of it, you will save a lot of money.

The oil is added to gasoline in the ratio of 1 to 50, that is, for example, for 5 liters of gasoline add 100 ml. As you can see, a small bottle is great for getting 5 liters of gasoline mixture to fill a chainsaw or grass trimmer. There are special marks on the side of a big bottle so you can see how much oil you have poured from it. If you bought a big one-liter bottle, buy a 20-ml syringe at the drugstore. Very convenient. 1 syringe of oil per 1 liter of gasoline.

It is a good idea to use original STIHL machine oil, because it is specifically designed and tested for STIHL power tools. Note that Stihl has its own brands, such as VIKING (popular models of gasoline trimmers). Use Stihl oil for them as well and you won’t have any problems at all.

If you have put more gasoline mixture than you can use up, then it is better to store the remainder in a metal canister or in a glass container. Do not store the mixture in a plastic bottle under any circumstances. Of course, if you use up the leftovers in a couple of days, you can pour the rest of the mixture into a plastic container, but if the mixture will be stored for a long time, then either a canister or a glass container. The thing is that the gasoline mixture corrodes the plastic bottle, there are microscopic sediments of plastic in the mixture and this is very bad for the engine. Keep this in mind if you want your tool to run long and trouble free.

The second most popular oil brand is the notorious Husqvarna. Of course, when you think about it, more people use STIHL chainsaws, at least all my friends and their friends use them.

But there are some who dote on Husqvarna tools and I understand them, because I personally do not see much difference between Husqvarna and Stihl, both tools are of very high quality. But I have seen happy owners of Husqvarna chainsaws. they say the saws are awesome. I have not cut any saws myself but I always listen to what people have to say. So, if you have a gasoline tool Husqvarna, then it will be better to use a special brand oil for it. Although nothing bad happens if you dilute the gasoline with Stihl. But since the manufacturer recommends using only its products, then we are going to do it that way.

You can find liter capacities on sale. Black stylish bottle, the same markings on the side as Stihl’s (to know how much oil has been poured from the bottle). Looks to me like exactly the same quality. The price of a bottle is 270 and a bit more expensive.

Both are high quality, cost almost the same, each diluted in the ratio of 1 to 50. So feel free to buy any oil, of course, it’s better to buy the oil of the brand that you have a tool. then everything will be perfect, just like the manufacturer advises. Have a nice sawing, mowing and let your power tool run for a long time without breakage.

on a side note: Submersible pump “Aquarius 3”. my review.

Types of motor oils and their purpose

Choice of oil for gasoline trimmer

Engine oil for gasoline grass trimmer is a lubricant that serves to reduce wear and tear between the rubbing nodes of the engine.

Oil composition includes residual hydrocarbons and different additives which improve properties of the final product. To ensure the long and trouble-free operation of the lawnmower, experts recommend using oils, which by their physical and chemical properties correspond to this type of motor.

There are three main types of oil today based on how they are made:

  • Mineral, created in the process of distillation of hydrocarbons;
  • Synthetic oils, obtained by processing natural gas or by synthesis;
  • Semi-synthetic, which includes an improved mineral oil with the addition of some synthetic components.

In order to prevent mixing of the different types, the manufacturer adds a dye to the oils, which shows the difference in the composition of the lubricant.

Preparation of the fuel mixture

The engine can be run on a mixture of gasoline and oil. The main cause of malfunctioning is incorrectly proportioned fuel mixture or no oil in the gasoline. When preparing the fuel mixture a special oil for two-stroke engines marked “For garden equipment” is used. Do not use oil for boat engines, motorcycles, etc. Gasoline/oil ratio may vary depending on the engine model, oil grade and gasoline tool manufacturer’s recommendations. Two-stroke engines use 50:1, 32:1, and 24:1 mix ratios.

Insufficient lubrication or operation with pure gasoline can keep an engine running for long periods of time. A characteristic feature of continuous operation with pure gasoline is excessive vibration and an irregular engine noise. Slight scoring on the piston and cylinder along the entire lateral surface height. The piston ring may be destroyed.

Insufficient lubrication results in transfer of metal from the piston to the cylinder walls and engine seizure.

If the engine oil is too high in the fuel mixture, piston rings could be choked and excessive sludge could form on the piston.

Also intensive sooting on the piston can be caused by prolonged operation of the engine with the carburetor choke closed.

Also an indication of an engine operating with too much oil in the fuel mixture is the presence of soot on the spark plug and heavy coking of the muffler screen, which is manifested by a loss of engine power during operation.

Let’s look at some indications that the user did not follow the Operator’s Manual recommendations regarding improper fuel use and storage.

If dirty gasoline is used to make the fuel mixture, dirty deposits will be present in the carburetor.

Also a sign of dirty fuel would be a dirty fuel filter located in the gas tank.

If you leave the lawn mower with fuel for a long time, there is an oxidation of the carburetor components. The elastic properties of the rubber fuel control diaphragm and the gasoline pump diaphragm may have changed. There may also be resin deposits on the carburetor elements.

Gasoline tool manufacturers recommend adhering to the following proportions when preparing the fuel mixture:

Use oil that is labeled “For Gardening Equipment. Do not use oil for boat engines, motorcycles, etc.д.

Use clean, fresh, unleaded gasoline with an octane rating of 92 or higher to make the fuel mixture.

Strictly follow the instructions for mixing gasoline and oil. Use the proper container to mix gasoline and oil. Do not mix gasoline and oil directly into the fuel tank.

Do not use an old fuel mixture that has been stored for more than 30 days.

Before storing for an extended time:. empty fuel tank;- run engine until fuel is depleted;- unscrew spark plug, pour 30 ml of high-quality 2-stroke or 4-stroke engine oil into cylinder, pull starter handle to evenly distribute oil inside engine, and replace spark plug.Before starting an engine after a long period of storage, unscrew the spark plug and drain the oil from the cylinder.

How to Mix (Dilute) Gasoline and Oil for 2T Engines.

To summarize, for example. For your brand-name equipment, use the oil designed by or recommended by the equipment manufacturer. For example, STIHL FS 55 brushcutter use STIHL HP oil (see lithium-ion filter). Figure 1a) or STIHL HP SUPER, for the Husqvarna 128R brushcutter use Husqvarna HP oil (Figure 1b) or Husqvarna LS oil. For 2.Do not use 4-stroke engine oils. Do not use 4-stroke engine oils. e. g. 10W30, SAE 30, etc.д.

Figure 1 a-Husqvarna oil (left), STIHL oil (right)

Useful hint

Never use 2-stroke oil for water-cooled engines, as these oils are designed for low temperatures.

Observe the proportions of oil and gasoline in the fuel mix specified by the machine manufacturer in the instruction manual. Chinese manufacturers most often indicate the ratio of 1 part oil to 25 parts gasoline, with STIHL and Husqvarna this proportion is 1 / 50.When preparing a small volume of mixture (up to 1 liter), it is very important to carefully measure the amount of oil included in the mixture. Even small miscalculations in the amount of oil can lead to serious inconsistencies in the mixture. In these cases it is possible to use a medicine syringe for precise dosing.The fuel mixture should be prepared in a clean container designed for this purpose. (see. Figure 2)

Useful tip

I do not recommend using improvised plastic bottles and canisters, as petrol can dissolve plastics and all this “slurry” gets into a fuel tank and causes failure of carburetor.

Plastic canisters designed for gasoline are always marked with a “flame” sign. It is very convenient to use a canister equipped with a spill-free dispensing system (see Figure 2). figure 3). The spill-free refueling system has a valve that keeps fuel from spilling when the tank is full.

Figure 3: No-flow refueling system

What is the best oil to choose for boat motors.

Also note that if these oils can not be used to prepare gasoline mixture for boat engines. In 2T model motors it is necessary to fill in a mix prepared from gasoline with octane number not lower than 89 and extra clean oil with detergent additives of NMMATC-W3 marking in proportion of 1:50 for operation mode, and. 1:25 for running-in operation (first 5-10 engine hours). Choosing the right oil.The basis of engine operation, so each manufacturer recommends pouring into the technique certain brands of oil, thereby guaranteeing the longest service life of the product. For boat motors (both 2t and 4t) tohatus service center recommends to use german motul or american quicksilver oils. For mercury boat engines, you should use only quicksilver motor oil. For Honda boat engines, the most preferred brands are motul and statoil.

Useful tip

It is not recommended to use the fuel mixture, if more than two months have passed since its preparation.