How to dilute gasoline for grass trimmer with oil

Gasoline for four-stroke engine

Devices with a four-stroke motor are more complex. Oil and gasoline are poured into different containers, from where they are then fed to the engine. For a mower with such a motor, you need AI-92 and AI-95 gasoline. It is better not to use fuel with a lower octane number, because this will lead to unstable engine operation. In addition, do not use a lubricant designed for two-stroke models.

Fuel mixture for two-stroke engines

Grass trimmers, which are equipped with a two-stroke motor, do not have a separate system for supplying oil to lubricate the rubbing parts. For this reason, such devices should be refueled not with pure gasoline, but with a mixture of fuel and engine oil. The latter should be specially designed for two-stroke engines. Application of automotive engine fluid will lead to premature engine failure.

Preparation of a fuel mixture for two-wheel engines

You need to refuel a lawnmower with a two-stroke engine with AI-92 gasoline. When using AI-95, overheating of the engine and uneven operation of the unit can be observed. You need to mix gasoline with oil in a ratio of 50: 1, where 50 is fuel, and 1 is oil. It turns out that 1 liter of fuel will require 20 ml of oil.

If the motor is worn out or the tool is under heavy load, then the ratio is 25: 1. If there is little lubrication, then scuffs will appear on the cylinder walls and the piston surface. Then the piston ring will undergo destruction, causing the engine to jam. An overabundance is not so critical, but it can lead to the formation of carbon deposits. At the same time, the piston ring will coke, which will reduce the power of the device.

Ratios of oil and gasoline for the fuel mixture

Gasoline for grass trimmer

Gasoline grass trimmers are ideal for site maintenance thanks to their portability. These models of lawn mowers require periodic fuel changes. The choice of gasoline must be approached competently. It is not worth saving much on the purchase.

Choosing a brand of gasoline for trimmers

It is necessary to select the brand of gasoline for mowers taking into account the manufacturer’s recommendations. If you do not follow them, then the motor will soon break down. Often RON 92 or 95 unleaded fuel is used to fill the grass trimmer tank.

Gasoline for fuel mixture

Filling the grass trimmer with AI-80 gasoline can lead to device breakdowns due to its low technical characteristics. Please note that after purchase, fuel can be stored for no more than 60 days, but it is better to reduce this period.

Polyethylene cans are not used for storage, since static electricity will be generated in contact with the inner walls. An accidental spark will cause an explosion. Although, there are special plastic canisters marked “flame”.

How to refuel the grass trimmer

A ready-made mixture of gasoline and oil can be stored for no more than 3 months (pure gasoline is stored less). Dilute enough fuel for several uses of the grass trimmer. In general, prepare:

  • gasoline and oil that is suitable for air-cooled two-stroke engines;
  • metal canister and mixing container;
  • respirator;
  • gloves.

Adding oil to gasoline

  • Pour 1 liter of gasoline into a container of suitable volume and add 1/2 of the required amount of oil.
  • Stir gently while keeping a good distance from open flames.
  • Add the remaining half of the oil to the fuel and stir again.

Grass trimmer filling process

General tips for refueling the grass trimmer with a 2- or 4-stroke engine:

  • Place the fuel tank so that the lid is on top, then fill in the required amount of fuel.
  • Do not overfill the fuel tank. This will lead to one of the problems: overflow into the intake manifold and fuel filter, fuel ignition or engine breakdown.
  • Try to pour the mixture so that it does not spill. To do this, you can use a watering can.
  • If you do spill fuel, wipe it up immediately. Dispose of the cleaning material, do not accumulate indoors. it is fire hazard.
  • The start-up of the device should be started after the fuel canister has been removed at a distance of more than 10 m.
  • If there was a long break between the use of the mower, be sure to drain the remaining old fuel.


A quality oil that can be poured into a gasoline grass trimmer must meet a number of requirements and regulations to ensure reliable operation and performance. The oil should:

  • provide an increase in wear resistance for various elements (in particular, the gearbox is especially susceptible to this);
  • to ensure the formation of smoke and exhaust gases is as low as possible;
  • do not allow premature ignition;
  • mix well with gasoline when exposed to low temperatures;
  • have good viscosity and flow characteristics in various temperature ranges;
  • be as safe as possible in terms of environmental impact.

As mentioned, two-stroke engine oil will differ from four-stroke engine oil. It has higher power, which is why fuel for it is obtained by mixing a certain amount of gasoline and oil. For each brushcutter, the ratio will be different. You can find out its meaning in the instructions for the device. These proportions must be observed with maximum accuracy. When adding additives, take into account the type of motor.

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If mineral oils are used, mixing should be somewhere in the ratio of 1: 25, 30 or 35, depending on the type. If we are talking about a synthetic analogue, then the proportion will be 1: 50 or 80. That is, a certain amount of oil dissolves in the volume of gasoline.

Petrol trimmer oil: types and recommendations for use

Gasoline grass trimmers are some of the more popular lawn mowing attachments. They are easy to use, mobile, allow a person not to depend on an outlet and show excellent results in the places where they are used. But for the stable operation of the gasoline grass trimmer, quality consumables are needed. In particular, we are talking about gasoline and oil. It is about the last component that we will talk about in this article.

Selection Tips

Now let’s try to figure out how to choose a quality gasoline grass trimmer oil. The main feature to look out for is the base number. This moment excludes the oxidation of the parts that have friction and slows down their deformation as much as possible. The more this compound is used, the faster it loses its alkalinity and becomes more oxidized. The optimal indicator of acidity (PH) is a value of at least 8-9 units.

The second important factor that also has a major impact on the performance of a gasoline grass trimmer is the viscosity of the oil. This characteristic determines the ability to use the device at different temperatures. Summer brands of oils begin to thicken already with a minimal decrease in temperature.

But given that these grass trimmers are usually used in the fall and spring, it is best to use just the oil with summer markings.

The third point, the importance of which should not be underestimated, is the flash point. This indicator should not be less than 225 degrees. Otherwise, the composition will burn out very quickly and the load on the piston group will begin to increase, which will cause its accelerated wear. Also, 4-stroke oil is not suitable for 2-stroke. Namely, the latter type of motors is used in the vast majority of gas mowers.

If we talk about manufacturers, then you can make a small rating that will allow you to navigate the formulations offered by various manufacturers. For example, STIHL offers high-quality synthetic and mineral oils that have already proven themselves as an excellent solution at any time of the year.

QUICK TIP #4 : How To Mix 2 stroke (Two cycle) Gas

Shell Helix Ultra oil is considered very good. Experts note its high characteristics and excellent indicators of alkalinity and viscosity. In addition, the products of such brands as Oleo-Mac, Motul, Hammerflex, Echo are considered worthy. If we talk about the products of domestic brands, then you should pay attention to Lukoil oil. Its price is several times lower than foreign counterparts, but at the same time it has high quality and good technical characteristics.

In general, the ideal solution would be a synthetic or semi-synthetic oil labeled TV or TA.


Engine oil is a special blend of solvent and friction-reducing additives. They form a certain viscosity and do not allow the composition to thicken when the temperature is lowered. Usually oils are specially colored in different colors: green, red or blue. This allows them not to be confused.

Please note that they may vary in composition, so petrol trimmer oil will be labeled “for gardening”. In addition, it may still differ in marking: “2T” or “4T”. The first is two-stroke oil, which is poured into the corresponding engine. And the second is intended for pouring into the crankcase.

In addition, you should be aware that under no circumstances should mineral and synthetic oils be mixed due to the fact that they have a different base.


The oil that is poured into the motor may differ in the production method. According to this criterion, it happens:

  • mineral. this type is obtained during the processing of petroleum products;
  • synthetic. it is obtained by processing or synthesizing gas;
  • semi-synthetic. this type has better characteristics due to the introduction of synthetic-based components into it.

Lawn mower oil refers to formulations intended for use in air-cooled engines that have a combustion chamber volume of 50-200 cubic centimeters. In addition, any two-stroke oil can differ from analogs in additives that give it certain additional characteristics. They are of the following types.

  • Antiwear. The main task of the oil will be to reduce wear of parts during the operation of the device.
  • Antioxidant. They do not allow oxidation to occur and make it possible to maintain the performance of the oil for a long time.
  • Anti-corrosion. Their task is to prevent corrosion from forming on the engine parts.
  • Friction modifiers. These additives can significantly reduce the coefficient of friction.

Two-stroke oil from different manufacturers may differ in the combination of additives used, which means that their properties will differ.

Recently, when purchasing oil for dilution with gasoline, users very often come across the fact that special letter abbreviations are applied to the cans. These designations are made within the framework of the API classification. Consider what types of oils exist in accordance with it.

  • TA is used for air-cooled brushcutters with an engine displacement of no more than 50 cubic centimeters. It can be used not only for mowers, but also for mopeds, lawn mowers and other types of machinery. For the petrol grass trimmer, this is the optimal solution.
  • TB is used to refuel a chainsaw, scooter, moped or motorcycle with an engine capacity of less than 200 cubic centimeters. Can also be used for refueling petrol trimmers.

But in addition to this classification, other letter designations of the FA-FD type are often found. It should be said that the API is an American standard that is used in Europe. But there is a discrepancy between European and American smoke emission regulations. For this reason, additional letter designations should also be taken into account.

  • FA can be used in countries where minimum exhaust gas emissions are required by law. Barely noticeable smoke may be emitted when using oils with such markings.
  • FB. can be used in countries where the restrictions on the emission of smoke and gases are much stricter. In this case, the smoke will practically not be emitted.
  • FC. a transparent smoke appears here, which the human eye cannot notice.
  • FD is a special category of oils for 2-stroke engines, they do not create smoke at all. They have increased chemical properties. Usually this oil is used for mixing with gasoline and subsequent refueling of boats and yachts.
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In addition, oils come in two more categories:

In the first case, this will mean that it is necessary to carry out self-mixing, which does not require shaking, and in the second case, you will need to do it too.

How to use?

For the proportions of oil used, see above. We must say right away that you should not deviate from the indicated values ​​and dilute gasoline by eye. At best, you just need to change the oil, and at worst, engine damage cannot be avoided.

dilute, gasoline, grass, trimmer

It is also important to be able to prepare the mixture correctly. It cannot be poured into the gas tank. It is better to pour the oil into a special container that already contains gasoline. A plastic bottle of mineral water is perfect for this. It is very important that it is clean, which is why beer or milk bottles will not work. And it is better that it be a liter or two-liter, since it will be difficult for many to calculate how much oil to fill in a 1.5-liter or 1.25-liter bottle. You will also need to have a syringe on hand that will function as a dosimeter. It is best to take a regular medical one for 10 or more cubes.

Now we will explain step by step how to make a good gasoline grass trimmer oil.

  • First, you need to know exactly what type of oil is required for a particular model of grass scythe, as well as find out the exact ratio of gasoline to oil to create a mixture.
  • Then you need to fill the container. The container should not be filled with gasoline to the end, because the oil must still fit there;
  • Now we draw the required amount of 2-stroke oil into the syringe and pour it into a bottle of gasoline. You cannot do the opposite, otherwise all the ingredients will need to be replaced, and the mixture will need to be done again.
  • Close the bottle with a lid and stir. It is important not to forget that you need to stir the mixture if there are the words Premix on the bottle of oil. If it says Selfmix, then after mixing the substances, everything is poured into the tank.

Now all that remains is to refuel the petrol grass trimmer, and you can carry out the necessary work.

For information on how to choose oil for gasoline trimmers, see the next video.

How Much Oil to Dilute Per Liter of Gasoline Grass Trimmer

How to dilute gasoline with grass trimmer oil?

The grass trimmer specification contains links to recommended fuels and lubricants. In this case, the octane number of the brand of gasoline is indicated specific, but in the part of oils there is an extensive explanation about the need to use a product of a certain manufacturer. How much grease is required to dilute by 1 liter per grass trimmer oil and gasoline. For assurance, it is indicated that only when these tips are followed, the company extends the warranty. What is it: a publicity stunt or oils from other manufacturers do not meet the requirements? The answer is in the true article.

Why Mix Grass Trimmer Oil with Gasoline

The two-stroke engine has an ordinary and, at the same time, very efficient design:

All this determined the creation of a family of small engines that were successfully adapted in household and professional equipment:

RYOBI: How to mix and store 2 stroke fuel

  • grass trimmers;
  • chainsaws;
  • bikes;
  • different motoblocks.

Due to the design features, it was possible to achieve the desired fuel consumption only on small engines with a power in the range of 15. 20 hp. This indicator looks especially great in the range of 1. 5 hp. Here, the completely low weight and dimensions of the motor correspond to the consumption of gasoline.

As the size increases, the area of ​​the inlet and outlet channels increases. Like “how much oil to pour on 1.2.5 should be 50 ml. Oil (1 liter of gasoline is needed. The process of gas removal and fuel supply deteriorates sharply. In this regard, it was necessary to switch to a more efficient gasoline mixture combustion system, which would provide for the presence of forced engine maintenance systems. Combining them into multi-cylinder designs allowed the creation of special systems associated with the formation of the composition of the fuel mixture, lubrication and other things, which favorably affected the consumption of gasoline.

How to mix oil with gasoline

Engine oils are used to add to the grass trimmer gasoline. When switching to another type of oil, oil and gasoline how much oil. Mixing is done in a certain proportion. Manufacturers have a different volume ratio: from 1 to 50 to 1 to 20. There is a reference to this in the technical specifications. You should be careful with small proportions of oils. Most often it is 1 in 50 (20 grams of oil per liter of gasoline). How much does a grass trimmer cost? A small inaccuracy leads to oil starvation of the engine, reduces its resource.

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There are products in which the proportion of 1 to 20-40 is indicated. It is better to refuse to use such a lubricant. The wide range of the mixture indicates the low quality of the product. The occurrence of piston rings, with constant use of such grades, is practically guaranteed.

How to find oil gas mix ratio for string trimmer and how to mix fuel

Motor oils, type M-8, are added in a ratio of 1-20. In high-speed engines, their use is undesirable. The cycle between supplying the mixture is so small that it will cause an overabundance of lubricant in the cylinder. Grass trimmers have low RPM so they can be used with low grade lubricant. Due to the initially low resource, you do not have to worry about the coking of the rings. Before the equipment is completely worn out.

It is not essential to use the recommended oil or from other manufacturers. How much oil is needed for 1 liter of gasoline for a lawn mower. The main thing is to dilute the gasoline with grass trimmer oil in the correct proportions in accordance with the characteristics of the product. Denial of warranty by service workshops only on the basis of the use of a different brand of grease, but with acceptable parameters, is illegal.

How to dilute oil on a grass trimmer and chainsaw.

information on our website www.LookTool.Ru How to dilute gasoline with oil for grass trimmer and chainsaw?

The rubbing elements of the piston and cylinder of a two-stroke engine are lubricated with oil, which is in a certain proportion in the fuel composition. How much oil 25 ml of oil per liter of gasoline. If you do not add oil to the fuel, how much oil is there per 1 liter of gasoline in the chainsaw. Dilute gasoline for. Gasoline burns out, and oil settles on the surface of the cylinder, reducing the friction of the rubbing parts. Lack of lubrication leads to cylinder damage, up to and including seizure. In case of excess, under the influence of high temperatures, the thermally modified product is deposited in the annular grooves. Compression drops, and with it power.

What gasoline to fill

Gasoline for the grass trimmer should be chosen unleaded with a stroke number of 92 or 95. As practice shows, AI-80 gasoline can lead to device breakdowns, which is a questionable economy.

Fuel must be fresh, that is, after purchase, it can be stored for no more than 60 days.

Other factors also affect the quality of the fuel, such as using a special lawnmower lubricant and diluting it in a separate container. It is also recommended to use special canisters designed for storing gasoline.

Ratio of gasoline and grass trimmer oil

Gasoline mowers are quite common tools used by owners of garden and backyard farms for mowing grass and making hay. The more common names for tools are grass trimmer and lawn mower. The main difference lies in the design of the motor. the expensive segment of devices is equipped with four-stroke models, and the cheap ones are equipped with two-stroke ones. The latter option has advantages, including low weight, ease of use, and low cost.

The most important condition for the operation of two-stroke models is the preparation of the fuel mixture, based on the proportion of gasoline and oil determined by the manufacturer. The simplified engine design does not provide a separate lubrication channel, so the 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 breakdown. Let’s figure out what composition is required for gasoline trimmers, how to properly prepare the mixture and what it can affect.

Oil selection rules

Engine oil, depending on the chemical composition, is:

  • mineral. made from petroleum distillates and designed for low-power air-cooled equipment;
  • semi-synthetic. is a mixture of mineral and synthetic oils and is suitable for 2T and 4T, as well as for air and liquid cooling;
  • synthetic. made on the basis of esters and can be used in powerful technology, as well as for work in difficult climatic conditions.

Important! Oils for two-stroke and four-stroke engines differ in their ability to dissolve, burn and evaporate. At the same time, in order for the liquid lubricant to differ from gasoline, it is painted in different colors: blue, green, red.

Depending on the API classification, the following groups of oils for trimmer motors can be distinguished:

  • TA. for low-power equipment with an engine volume of up to 50 cm³ and air cooling;
  • TV. for powerful equipment with a motor volume of 50-200 cm³ and an air cooling system;
  • TS. for powerful two-stroke equipment (brushcutters, chainsaws, lawn mowers, etc.) with an engine volume of 50-200 cm³;
  • TD. for engines of boats with liquid cooling.

In order to select the optimal oil for a specific grass trimmer model, it is best to take into account the recommendations specified in the instructions. For brushcutters 2T, API-TV and API-TC oil is usually used.

On a note! In addition, there is a JASO classification for two-stroke engines, and SAE30 is still used for four-stroke engines.

Leading garden equipment manufacturers develop and produce oils for their equipment themselves. Such lubricating compositions most fully satisfy all the technical and operational characteristics of a specific series of trimmers. For example, for STIHL (STIHL) FS 5 brushcutters, it is best to use STIHL HP or STIHL HP SUPER oil, for Husqvarna 143R, Husqvarna HP or Husqvarna LS oil is suitable. But for the Patriot brand, ordinary mineral oil M-8B is also suitable.