What is the Proportion of Oil and Gasoline For a Chainsaw

Those who constantly use a chainsaw, as no one else understands that how long and in high quality it will serve depends on the correct ratio of oil and gasoline when refueling the mechanism. Before using a power tool, you should pay attention to its brand and features, since each manufacturer recommends a different ratio of fuel and lubricants.

What is the Proportion of Oil and Gasoline For a Chainsaw

About how to refuel petrol, the correct ratio of oil and gasoline and the preparation of various working mixtures will be discussed in this article.

Features and characteristics of various chainsaws

Regardless of the brand, each chainsaw has a basis through which it works safely. Without a two-stroke carburetor engine and two tanks, it is impossible to imagine any mechanism.

  • Each of their parts plays a crucial role in the operation of a power tool and complements the rest of the elements. In one of the tanks should be a fuel mixture consisting of gasoline and engine oil.
  • Typically, the proportions in the ratio between gasoline are determined by the manufacturer, it is extremely important to comply with them.
  • As a rule, the consumption of gasoline and oil is enough for the same period, but at the same time gasoline is poured more than one and a half, or two times.

The constant addition of oil to the fuel tank is almost certainly an event that allows the saw to work for a long time and without interruption. No one who uses this mechanism wants to constantly engage in repair work, but if the fuel is not diluted with oil, the saw engine may malfunction and it will fail.

Of course, only personal experience can suggest the correct ratio of fuels and lubricants. However, one should never neglect the recommendations from the manufacturer, as independent experiments can lead to the breakdown of expensive mechanisms. It is also worth noting that budget mixes are suitable for domestic saws than for foreign counterparts, so prudent owners try in this case to save the budget and buy cheaper supplies for devices.

Which gasoline is suitable for a chainsaw

Older models of Russian chainsaws work normally on A-76 gasoline, but for chainsaws manufactured abroad, it is better not to use this fuel, but to fill the tank with better gasoline, such as A.92. But, here the question may arise about the quality of the very gasoline that is purchased at gas stations in the country, it often doesn’t correspond to the declared composition. In order not to risk in vain, some owners of imported chainsaws buy 95 gasoline.

They are also not advised to use fuel that has stood unnecessarily for a long period. The fact is that gasoline is capable of losing its main characteristics over time. For example, the octane number in gasoline is of great importance, with a decrease in which, during operation of the saw, a decrease in engine power may occur.

A chainsaw may become unworkable due to the filling of poor quality fuel. Sometimes such an error is very expensive for the owner, since repairing a failed mechanism costs much more than fresh and expensive gasoline.

How to choose a little for chainsaws

  • The most common oil for use in chainsaws available to most Russians is API.TV motor oil.
  • Another brand is also used. API-TS, but here the manufacturer’s permission is required to use the material, as well as its amount when added to gasoline.
  • There is another option, for saws with a small load, API-TC oil may be applicable here.
  • All of these brands are classified by the American Petroleum Institute, but there is another no less popular series of oils that are produced by the Japanese. They also classify lubricants into power classes. For the operation of chainsaws, fuel and lubricants of the JASO-FB and JASO FD brands are recommended.

Note! Do not use oils created for four-stroke engines in chainsaws with two-stroke engines.

In the second case, the lubricant must completely burn out. This effect can only be achieved through the use of synthetic oil, it gives a minimum of smoke and almost does not leave any residues. It is important to read the instructions for using and mixing consumables for a particular brand of chainsaw.

How to make a mixture of chainsaws from oil and gasoline

After you have studied the full information from the manufacturer, which is necessarily present in the accompanying documents, you can proceed directly to pouring materials into the tank.

For chainsaws with a capacity of less than one and a half kilowatts, oil is poured 50 times less than gasoline. But there are exceptions, for example, in Chinese chainsaws, these proportions come down to 1X25, but for the manufacturer Partner again, changes up to 1X40 consumption. For the Husqvarna and Stihl brands, the proportions of 25 ml of oil per 1 liter of gasoline are applicable.

If you do not comply with the recommended dosage of combustible materials, a lot of problems can arise:

  • engine parts, between which friction occurs during the operation of the saw, will more likely wear out, which means the mechanism itself will last less,
  • bearings will fail faster;
  • the resource of the mechanism will be significantly reduced;
  • the device will become less functional.

Preparation of the mixture should be carried out immediately before starting work. But after its completion, the unburned remains of combustible material and oil are necessarily drained. It is strictly forbidden to store them in a gas tank, even for several days. This is due to the additives in the oil, it will begin to break down directly in the tank, because caring owners drain the rest of the mixture and then start the chainsaw at idle.

Terms of use

The best option for mixing the mixture is a canister with various openings for gasoline and oil. The correct mixture is obtained when mixing consumables from the tilt of the canister. Plastic or glass containers can be used to prepare the working fluid, but in this case there is a risk that fuels and lubricants will ignite. But plastic containers are also not convenient, as they can easily bend and pour into your hands or mechanism.

Dilution of gasoline is carried out only in dry and clean containers, any residues and liquid particles will lead to a violation of proportions when mixed. Therefore, care should be taken to check the tank for all kinds of dirt or residues.

Take all possible precautions when mixing combustible supplies. Rubber gloves should be put on your hands, manipulations should be done carefully, without spilling a drop of gasoline on the surface of the earth or floor. If the fluid accidentally spills out, it must be wiped with a cloth and disposed of.

Oil producers

  • The most interesting proposals regarding not only oils but also chainsaws are available from Stihl. Our men appreciated the quality of engines and consumables, so they are incredibly popular. If you have such a mechanism in your household, you should not spend money on cheap materials.
  • Another world brand for the production of chainsaws stands out. Husqvarna, which is famous for manufacturing high-quality motor materials for two-stroke engines. However, when using them, excessive smoke is noted, and this is with incomplete engine power.
  • Ravenol is also a well-known brand that you can buy without fear. The main thing to be afraid of is the fakes that flooded today’s markets around the world.
  • March 14, 2019
  • Miscellaneous
  • Svetlana Pavlova

One of the important indicators of the durability of chainsaws and their quality work is the correct observance of the ratios of the constituent liquids when preparing the fuel mixture. It is known that an insufficient amount of oil leads to excessive friction of parts and their rapid wear, and excess. to the appearance of soot, overheating of the engine. This article will discuss the proportions of oil and gasoline for the Stihl chainsaw. This is especially important for beginners who have just purchased a tool.

Chainsaw Characteristics

Each chainsaw has three main elements that ensure its operation. These include a 2-pin carburetor engine and two tanks. The fuel mixture is poured into one, the oil necessary to lubricate the chain in the other. The volume of the fuel tank is 0.25 L, which allows you to work without stopping for 45–55 minutes. The volume of oil is less than about half. With this ratio of volumes, the contents of both tanks end almost simultaneously.

When operating 2-stroke engines, the oil pump system is not used, therefore, for the Stihl chainsaw, oil in gasoline has to be added to lubricate the shaft, piston and other rubbing parts. Attempts to work on one gasoline or non-observance of the proportions specified in the instructions for compiling a fuel-lubricant mixture of two components, lead to a breakdown of the tool.

Correct proportions

Most often, in the preparation of fuel for sawing, proportions of 1:50 and 1:40 are used. This means that 50 or 40 parts of gasoline add one part of the oil. Calculations are made as follows: 1 l = 1000 ml, 1000/50 = 20 ml or 1000/40 = 25 ml, that is, in the first case, pour 20 ml in each liter of gasoline, and in the second 25 ml of oil. If there is no instruction and you do not know the proportions for the preparation of the mixture, then use the following recommendations:

  • Tool and oil of the same brand. For example, for a Stihl chainsaw, the ratio of Stihl gasoline to oil will be as indicated on the container with oil, usually 1:50.
  • The substances used for the mixture have different brands. the ratio is 1:40.
  • There is only one brand, but there is no information on the ratios of substances on oil. they breed 1:40.
  • In the absence of any data on saw and oil, the mixture is diluted in a proportion of 1:40. The only thing you need to make sure that the oil is designed for two-stroke engines.

To run a new saw in the first three refueling tank with fuel oil add 20% more. In this case, instead of the ratio 1:50, it will be 1:42, and the proportion 1:40 turns into 1:33. A liter of gasoline will require 24 or 33 ml of oil, respectively. Other break-in events with a new saw are not carried out. Manufacturers are advised to work only at the highest speeds ever. After running the tool, the usual proportions are 1:50 or 1:40. In some cases, the manufacturer of the equipment indicates other ratios, for example, 1:25 or 1:32, they must be observed.

What kind of gasoline to fill in a chainsaw?

According to experts, you should use unleaded gasoline obtained by adding lead-free additives with an octane rating of more than 90. For foreign models, gasoline of higher grades is required and branded oils of the tool manufacturers are used. Perfect considered fuel grade AI-92. How to breed gasoline for a chainsaw "Stihl 180"? In this case, the oil content in the mixture is 1:40. AI-95 fuel is quite suitable for it, but according to professionals, it is better not to use it for chainsaws.

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The fact is that it is manufactured on the basis of AI-92 using certain additives that change the quality of the fuel. These components are deposited on the internal parts of the instrument and, upon reaching a critical mass, begin to exfoliate, disrupting the operation of the mechanism. The best option is to follow the instructions that come with the selected model. Gasoline is recommended to be used fresh, because during prolonged storage in containers, octane properties are lost.

Stihl chainsaw: which oil to use for gas?

A number of manufacturers producing equipment also produce their own consumables that are adapted to the operation of a particular engine. So Stihl also produces oil exclusively for its technology. It is equipped with special additives that can compensate for the quality of the fuel, improving the lubrication and cleaning of the fuel mixture. It should be noted that Husqvarna HP oil is universal and can be used for any chainsaw. It can be used at a temperature not lower than 10 degrees.

As well as for two-stroke engines, products of the following brands are used: Sadko, Kraissmann, Oleo-mac Prosint. If you use a Stihl chainsaw, how much oil per liter of gasoline needs to be poured? The ratio will be 25 ml of additive per liter of fuel. It must be remembered that there are oils for chains and motors. They are designed for different purposes and are not interchangeable. The use of chain oil for the preparation of a fuel and lubricant mixture leads to breakage of the tool.

What brand to use motor oil?

For each model, the manufacturer advises a list of materials that must be used. It is better for the user to adhere to these recommendations, because the breakdown of the instrument due to inappropriate fuels and lubricants does not cover the warranty. In this case, the owner himself pays for the repair of the chainsaw, which can be up to 80% of its value. When it is not possible to follow the manufacturer’s recommendations, try to follow these rules:

  • Use oil designed for two-stroke engines only.
  • Do not use after expiration date.
  • Do not add used oil with a large amount of impurities to gasoline, as the tool mechanisms may be damaged.
  • Chain lubricant must not be used for the fuel mixture.
  • It is preferable to use synthetic and semi-synthetic oils, which are more expensive than mineral, but do not form harmful deposits.

How to make a mixture?

In order for the equipment to serve for a long time and properly cope with its functions, you need to know exactly how much oil you need to add to the Stihl chainsaw gasoline. Earlier, we found out that it is better to use a lubricant product from the manufacturer Stihl and unleaded AI92 or AI95 gasoline as components. Leaded grades of fuel adversely affect the operation of the unit and disable it. With these components, 20 ml of oil is added to the liter of gasoline for the mixture. Any violation of the proportions leads to the appearance of soot on candles and pistons, as well as the formation of scoring. The oils used may be green, blue or red.

By the color of the mixture, their presence is easily determined. To dilute the fuel, often complete with equipment, a special canister is attached. These tanks are marked with graduated divisions and there are two holes. It remains for the user to fill the tank with the mixture components to the required marks, close the lids and mix. Some use plastic bottles and syringes for measuring oil for these purposes. In this case, it is necessary to ensure that foreign particles or water do not get into the tank, all this will worsen the operation of the engine.

What will happen if you do not take into account the manufacturer’s recommendations?

In violation of the rules for the preparation of fuels and lubricants and non-compliance with the proportions when adding oil to gasoline at a chainsaw "Stihl 180"; The following problems occur:

  • With increasing friction, the wear of the working surfaces of the parts will increase.
  • Due to insufficient lubricant, the bearings will begin to break down.
  • The full functioning of the mechanical components is disrupted due to the premature wear of parts, their service life is significantly reduced.
  • When using low-grade grades of gasoline and oils, the performance of the unit decreases with the subsequent breakdown of important components and parts.

Fuel is prepared before refueling the saw, avoiding excessive contact with oxygen. After completion of work, the remaining mixture must be drained.

Shelf life of the finished fuel mixture

Motorists know that it’s not worth storing gas for a long time, and the finished fuel mixture deteriorates even faster. Mix the necessary proportions of oil and gasoline for the Stihl chainsaw before starting work. Manufacturers allow storage of finished fuel for up to one month, and experts recommend that this period be reduced to 10 days. Immediately after mixing, the solution begins to lose its original properties and over time it becomes completely not of the same quality as it was prepared. Learn how to prepare so much fuel for a saw so that it can be spent at a time. It comes with experience. Keep the mixture in a gasoline-resistant opaque tightly closed container. For this, any metal plastic canister for combustible materials is suitable. They also use an oil container or glass containers made of dark glass.

Chain oil selection

In addition to the motor, for which all the proportions of oil and gasoline for the Stihl chainsaw have already been figured out, there is another important part, consisting of many moving links. a chain. To lubricate it, use not motor, but chain oil. It has completely different properties and is cheaper.

For a new tool, use only the oils of the manufacturer, which are recommended in the instructions. Otherwise, if a saw breaks down, it will be removed from warranty service due to non-compliance with operating conditions. It should be noted that the oils from the manufacturer are really high quality. After the warranty period, you can use any engine oil, making it replaced twice a year.


Customer reviews of Stihl saws are mostly positive. It is light in weight and affordable. Some complaints are found on the small power of the instrument. But for periodic use at home, it is quite suitable. And if you use the right proportions of oil and gasoline for the Stihl chainsaw, then it will last for many years.

Gasoline, as well as engine oil and chainsaw chains play one of the key roles for the stable operation of the tool. The durability of the main working mechanisms of the saw depends on their quality and properties, therefore, the choice of fuel and lubricants should be treated with special responsibility. The regular use of high-quality lubricants and fuels is the main guarantee of the long-term operation of the chainsaw without its unforeseen breakdowns.

What kind of gasoline to fill in a chainsaw?

When choosing the right fuel, each owner of the tool should build on the brand and country of manufacture of the model on the farm. Old domestic saws called Ural and Friendship are best filled with AI-80 grade gasoline. It contains precisely those additives that are necessary for the stable operation of unpretentious domestic engines. modern domestic models are designed to operate on the 92nd gasoline.

Things are a little different with imported chainsaws. The motors of all these models are designed for more gentle fuel, so German, Swedish, American and Japanese chainsaws need to be refueled exclusively with gasoline, AI-92.

An important role in choosing gasoline is played by its condition. Many novice gardeners are confident that fuel can be poured into the saw’s fuel tank, which can be kept in the canister for a long time. Some people think that the tool works in constant dust, and it is because of this that manufacturers have provided a special air compensator in the carburetor, which works when the air filter is worn.

This opinion is fundamentally wrong. As a result of a long stay in the canister, gasoline loses its main properties, and its composition, depending on the material of the container, is replenished with plastic molecules or metal rust.

Due to a long stay in the canister, gasoline begins to lose its fumes, and it is they that ignite when the chainsaw starts. It is because of this that gardeners face a number of typical problems, which include:

  • difficulty starting the motor;
  • rapid drop in engine power;
  • accelerated wear of tool elements.

To prevent this, you need to regularly use only fresh fuel from proven gas stations. It is best to buy 2-3 liters of gas every morning before starting work in the garden. The use of fresh gasoline will facilitate the launch of the chainsaw, and significantly extend its life.

Is it possible to pour 95 gasoline into a chainsaw?

In almost every instruction manual, you can find instructions from manufacturers that for regular refueling of household tools you need to use gasoline with a constant octane rating of no higher than 92. Despite this, many beginning gardeners continue to refuel their saws with 95th gasoline, in vain believing that he is better.

It should be remembered that the engines of all imported and some domestic tools were originally designed to operate on 92nd gasoline. If 92-th gasoline is poured into the instrument’s fuel tank, this will lead to a push of the piston into the counter-flow, which is often called detonation. This dangerous process will become cyclical, and will be repeated at each revolution of the ICE crankshaft. Probably, it is not necessary to say that the use of 98th gasoline will even worse affect the operation of the piston and the condition of the engine of the chainsaw.

Two-stroke engine oil for chainsaws

Modern gasoline saws can be equipped with 2-stroke or 4-stroke engines. In the latter, the oil initially enters the parts of the crank group directly from the crankcase.

In contrast, in two-stroke factory engines, fuel enters the plane below the piston. To refuel such chainsaws in fresh gasoline, you need to add engine oil. It lubricates friction parts of the engine, preventing their premature wear.

Oil for 2-stroke chainsaw engines must necessarily meet a number of important parameters:

  • when burning oil, a minimum amount of ash should be formed. It is best that the oil used burns in full;
  • the lubricant should dissolve quickly in gasoline;
  • 2-stroke engine oil must be cleaned of harmful impurities, which can lead to blockages in the carburetor lines.

The choice of oils for 2-stroke engines largely depends on the types of cooling systems. For lubrication of ICE equipped with air cooling systems, 2T standard compounds are suitable. For motors cooled by liquid systems, oils marked TC-W3 should be selected.

In any case, the oil for the permanent lubrication of the engine of the tool used must have the highest quality. Poor-quality oils during combustion form a large amount of soot, which settles on the walls of the cylinder and under the piston rings of the engine. Because of this, the standard rings lose the ability to compress, resulting in burrs on the inner walls of the engine cylinder. In addition, poor-quality grease leads to overheating of the parts of the crank mechanism. As a result of this, they jam and completely fail.

How to dilute gasoline with chainsaw oil?

A mixture of gasoline and oil should be constantly prepared in a clean container, on the walls of which there are measuring marks. This will give the owner of the chainsaw the ability to accurately determine the amount of gasoline and engine oil they mix. The material of which the container is made must be resistant to gasoline. Metal vessels are well suited for this.

Fill fuel and lubricant through a watering can to prevent loss of components. In order for the grease used to completely dissolve in the fuel, the filled container will need to be shaken several times. As a result, the gasoline mixture should become evenly colored. In this case, it must be ensured that there is no precipitation at the bottom of the vessel.

The ratio of oil and gasoline for chainsaws

Each chainsaw company customizes engines and base carburetors to handle varying amounts of lubricant. Therefore, the proportion of oil and gasoline for a chainsaw may vary slightly.

Most often, when mixing fuel with oil, manufacturers advise using proportions of 1:50, or 1:40. This means that 1 part of motor lubricant needs to be mixed in 50 or 40 parts of fuel, respectively.

Converting a proportion to a more accessible wording is quite simple. For example, 1 liter of fuel contains 1000 ml. If 1000 ml divided by 40, then get 25 ml. This means that for 1 liter of gasoline you will need to dilute 25 ml of lubricant. The same formula should be used when the manufacturer recommends preparing the fuel mixture exclusively in a proportion of 1:50. To do this, 1000 ml must be divided by 50, resulting in 20 ml. This means that in one liter of fuel, 20 ml of motor lubricant should be diluted.

Things are slightly different with Chinese chainsaws. Their manufacturers are advised to breed gasoline for chainsaws in a ratio of 1:25. This means that owners of Chinese tools need to mix exactly 40 ml of a lubricant in 1 liter of pure gasoline. This ratio is due to the fact that these chainsaws are slightly inferior to their Western counterparts in terms of build quality and selection of components. In engines of American, European and Japanese models, the distance between the cylinders and pistons is much smaller than that of chainsaws from China. In this regard, the amount of lubricant required for the first to work. far less.

Which oil to use for chainsaw chains?

To know exactly what oil to use to lubricate the chainsaw chain, you will need to study the instructions of its manufacturer. Almost all manufacturers of tools recommend pouring a tool that stands out with the highest adhesive properties. This means that the material used to lubricate the chain must adhere to the metal surfaces of the chain and tire.

You need to figure out why the lubricant has adhesive properties. When the chain moves along the standard tire, the saw element reaches high speed. If, for lubrication purposes, you use chain oil for a chainsaw, which has low adhesion, then more than half of the fluid will fly by inertia from the top of the tire without reaching the bottom of the tire. As a result, such an oil will prove ineffective, and the tire, along with the chain, will quickly fail due to constant friction.

The best oils for chainsaw chains

You can find the highest quality oils on the market, which are recommended by almost all manufacturers of chainsaws and manufacturers of saw sets for them. These products are characterized by high adhesive properties, which makes them effective when working in difficult weather conditions. These lubricants include:

  • Stihl ForestPlus oil. this composition is best used at an air temperature of at least 15 ⁰ͦC. On sale, the material is supplied in containers with a capacity of 1 or 5 l;
  • Stihl SynthPlus grease. has high adhesion with metal coatings. The composition shows high efficiency when working in conditions not lower than 25 ⁰C;
  • Husqvarna Bio Advanced oil. shows itself equally well, both in normal and in extreme conditions. The product has a balanced composition with improved adhesive properties;
  • Makita Biotop grease is one of the top products. reliably protecting the saw parts of the tool from increased friction and premature wear. The price of this oil is much lower than Stihl products;
  • Oleo-Mac Polar Lube is a low-cost lubricant that stands out due to its low price and excellent viscosity and adhesion parameters.

To lubricate each of these products, manufacturers advise using no more than 5 mg of lubricant per cycle.

Chainsaw sprocket oil. manufacturers tips

In order to reduce the friction of the drive sprocket and extend the life of the mechanism, each manufacturer equips it with a needle bearing, which needs periodic lubrication. Many experts advise using the multi-purpose composition of the Stihl brand for this.

This tool is quite expensive, so some gardeners and professional forest fellers use lubricants at a lower cost. Compounds such as Litol or Litol 24 have proven effective against the high friction of a needle bearing.

The same oil can be used to lubricate the driven sprocket of the chainsaw, as well as to protect the drive sprocket. A small syringe is suitable for their application. It quickly presses the lubricant into the small holes in the tire and next to the bearing located above the sprocket.