How to mix gasoline with chainsaw oil

Chainsaw “Huter”: how to dilute gasoline with oil?

The German company Huter has been on the Russian market since 2004. She mainly supplies gardening equipment. Chainsaws from this company are intended for domestic use only. For the preparation of the fuel mixture, manufacturers recommend the use of a high quality oil that is suitable for air-cooled two-stroke engines, complying with the API TB or API TC classification. Gasoline for mixing should be taken from AI-92 unleaded. The ratio of the components in this case is 1:40, that is, 25 ml of oil is taken per 1 liter of gasoline, when no other data is indicated on the oil bottle. Mixing is carried out in a separate container according to the specified proportions, and only then the mixture is poured into the fuel tank.

gasoline, chainsaw

For this, a bottle with graduations and a medical syringe without a needle are taken. All ratios must be strictly observed.

In what proportions to mix liquids?

Each chainsaw manufacturer determines its proportions to obtain a gasoline-oil mixture and indicates this in the technical passport that is attached to the tool upon purchase. The proportions of gasoline and oil for chainsaws of domestic production are most often recommended in a ratio of 1:15 or 1:20. In order to calculate how much oil is required per liter of gasoline, you need 1000/15 = 65 ml and 1000/20 = 50 ml. In the first case, 65 ml of oil are added to each liter of gasoline, and in the second. 50 ml of oil. For imported equipment, the proportions are somewhat different.

For a Husgvarna chainsaw with an engine power of 2 kW, the manufacturer advises using a ratio of 1:50, that is, add 20 ml of oil for every liter of gasoline. Chinese-made saws require 40 ml of oil per liter of gasoline at a ratio of 1:25. It should be remembered that with an excess of oil in gasoline, carbon deposits increase, the cylinder becomes clogged, piston rings are damaged and compression decreases. If there is a lack of oil, the engine overheats and the performance of the tool sharply decreases. When the documentation is lost and you do not know how to mix gasoline with chainsaw oil, you can contact the service center for the necessary information.

Gasoline with chainsaw oil. how to dilute and why it is done

Chainsaws from different companies are based on a two-stroke internal combustion engine that drives the cutting headset of the tool. To drive the internal combustion engine, the proportions of gasoline with chainsaw oil are used. Combining gasoline with oil is a mandatory procedure, so if you just bought a tool, then you need to understand the peculiarities of refueling it.

Gasoline to chainsaw oil ratio

The proportions of oil and gasoline for refueling two-stroke engines of chainsaws of different brands is 40 to 1 or 50 to 1. This ratio is standard, which is used not only by beginners, but also by experienced sawers. It is this ratio for preparing the fuel mixture that is close to ideal, and provides lubrication of the rubbing parts of the crank mechanism and the piston.

How much oil should be poured into gasoline in milliliters? Calculated per ml, the proportion of oil and gasoline 1 to 50 is 20 ml per 1 liter. To prepare the correct mixture, you should fill 1 liter of gasoline in a plastic bottle and dilute it with 20 ml of oil. To correctly measure how much oil to pour, you should take a special measuring container and fill it up to the appropriate mark. If you plan to immediately prepare 2 liters of fuel, then 40 ml of lubricant must be added to this amount of gasoline.

There are other ratios that different manufacturers offer. These values ​​of the ratios differ insignificantly, but if you have subtracted other values ​​in the instrument’s passport, then you need to adhere to them. A value of 1 in 50 or 40 is standardized. Pour 15 ml of oil into 1 liter of fuel in the summer, and in winter, add at least 20-25 ml. Knowing the recipe for preparing the mixture, you should also figure out what kind of gasoline to pour into the chainsaw?

Main brands of chainsaw motor oils

STIHL and Husgvarna are the leading chainsaw lubricants. The following oils are used for saws:

  • STIHL HP is a mineral lubricant for tools of the same brand. Has a red color, is available in different packaging, even for single use, which is very convenient.
  • HP Ultra. synthetic, enhanced, low temperature usability.
  • Vitals Semisynthetic. designed for budget models, used all year round.
  • Husgvarna HP. semi-synthetic, supplied with additives to compensate for the poor quality of gasoline. Suitable for use in technology and other brands.
  • Champion Jaso FD. provides reliable protection for all engine parts.

There is a wide range of products for two-stroke engines on the market from different manufacturers. How to dilute chainsaw oil is indicated on the package. It is better to buy the products of well-known companies, this will help keep the tool in working order longer.

What happens if you pour working off into a chainsaw

When a chainsaw owner has been using it for a while, they may want to do some modification to the tool. And it’s good if his desires are limited to the purchase of various attachments that expand the functionality of the chainsaw. But some go further. they start experimenting with the gasoline and oil that their saw runs on.

If we have already spoken about gasoline earlier (most modern saws require it with a high octane number. at least 92-95), then it is worth mentioning the oil separately. Many car enthusiasts accumulate a significant amount of used engine oil during vehicle operation. And therefore, some have a desire to use this material for refueling a chainsaw.

If you do this, then it is guaranteed that the engine will fail. This is primarily due to the low lubricity of the recycled oil. It will burn with a lot of black soot. The metal particles contained in the oil will first clog the fuel filter (these are the larger particles), and then the cylinder O-rings will fail. A metal suspension in the oil will damage both the surface of the cylinders themselves and the bearings.

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Some “innovators” try to use the working off to lubricate the chain itself and the block on which it is located. It also will not lead to anything good. What exactly will happen can be seen in the attached video.

Chainsaw refueling instructions

Knowing the ratio of the preparation of the petrol-oil mixture, you can start refueling it. Refueling instructions are as follows:

  • First you need to prepare the mixture. Having combined the two main components, you should mix them thoroughly.
  • Place the tool on a clean and level surface. Before unscrewing the gas tank cap, it is necessary to clean or blow off sawdust, dust and dirt.
  • The filler neck must point upwards.
  • Install a small watering can in the neck, then pour fuel
  • Control the refueling process, as the volume of the tank is small, so it fills up quickly
  • Do not fill up to the full maximum, since when the tank cap is closed, the remaining fuel will splash out.
  • After the fuel is poured into the tank, immediately add chain lubricant.
  • Fuel consumption and chain lubrication are approximately the same, therefore both tanks must be filled at the same time.
  • After refueling, you can start starting the engine.

It is better to start the engine not in the place where the refueling was carried out, but to move to a distance of 2-3 m. The tool is ready for work, and you can start to start it. How the chainsaw engine starts, you can read in this material (link).

Ratio of oil and gasoline for chainsaws

How much oil to add to gasoline for a chainsaw is indicated, first of all, in the operating instructions for the tool. If you have forgotten what the proportion of oil and gasoline should be, then you can always open the instructions and update your knowledge. If the instructions are lost, then this material will help you. To begin with, it is worth noting that there are several options for mixing oil materials with fuel. Choosing any, it is worth noting that the main criterion for each is the correctness of measuring the components. Only the exact observance of the proportion of oil and gasoline will allow achieving the fuel mixture of the required technical qualities.

One of the most common proportions is 1:50. This means that 1 liter of gasoline must be diluted with 20 ml of oil. Such a recipe for preparing a mixture is relevant for tools whose power exceeds 1.5 kW. This option is one of the most popular, so if you have forgotten the exact proportions for your instrument, then you can always focus on the first option.

The second option provides for a ratio of 1:25. Mixing 1 liter of gasoline with 10 ml of oil is recommended by Chinese manufacturers for their tools. For tools whose power does not exceed 1.5 kW, it is recommended to pour oil in the amount of 25 ml per 1 liter of gasoline. Each manufacturer’s chainsaws have their own restrictions, and recommendations for preparing a fuel mixture, which are recommended to be followed. The above are two main options that are universal.

It’s important to know! An excessive amount of the oil mixture in the fuel is also negative, since this will lead to a reduction in the engine resource due to increased shock loads on the cylinder and piston, and will also entail the formation of carbon deposits.

Not everyone knows what kind of gasoline to pour into the chainsaw. This is also indicated in the technical documentation for the chainsaw. In modern saw models, it is recommended to pour fuel of a grade not lower than AI-90, that is, AI-92 or AI-95. And it doesn’t matter who the tool manufacturer is, China or Europe. Professionals recommend using AI-92 gasoline, since in Russia the 95th is in most cases produced from 92 by adding additives. If you know for sure that this is really pure 95, then it is better to use it.

Many craftsmen continue to pour gasoline of grades lower than AI-90 into modern models of chainsaws, as it was allowed to do this for outdated models of tools: “Friendship”, “TAIGA” and others. This is not recommended.!

Which oil to use to lubricate the chainsaw chain depends directly on the model of the tool. STIHL branded saws and the like produce special lubricants that are intended only for use in such tools. Recommended oils can also be found in the technical documentation. When choosing a lubricant, you must pay attention that it is necessarily intended for two-stroke engines. Oils for mixing with gasoline and for lubricating chains differ in composition, quality and purpose. You cannot mix them, as this will accelerate the failure of the instrument. Recommended oil brands for two-stroke engines:

Fuel mixture: the proportion of oil and gasoline for the chainsaw

The chainsaw engine is the heart of the tool, so it is very important to use a properly prepared fuel mixture.

The fuel mixture for a chainsaw is prepared from two components. oil and gasoline. Chainsaws are equipped with two-stroke engines, so oil is not added to the lubrication system (like in a four-stroke engine), but directly to gasoline. At the same time, it is very important to observe the correct proportions of ingredients, of course, in no case try to work on pure gasoline, because in this way you will very quickly “kill” the chain saw.

If we talk about what kind of gasoline to pour into the chainsaw, then it will be optimal to use fuel with an octane rating of A-95, in this case the savings on fuel can turn out to be deplorable. Often European manufacturers indicate that it is possible to use A-90 or A-92 gasoline, but in post-Soviet countries the quality of gasoline is inferior to that of Europe, so in our realities it is better to use better quality gasoline.

As for the proportion of the petrol-oil mixture itself, everything is simple here: you must follow the instructions for the tool. All manufacturers of chainsaws indicate the required ratio in the instruction manual or in the passport of the tool, in addition, the proportions for refueling the chainsaw may differ depending on the model of the chain saw. As a rule, the proportion of oil and gasoline to a chainsaw of famous manufacturers is a ratio of 1:40 or 1:50, which means 1 part of oil for, for example, 40 parts of gasoline. Now arithmetic 1 liter of gasoline = 1000 ml of gasoline, divide by 40 and we get 25 ml of oil. If you follow the same steps to a ratio of 1:50, you get 20 ml of oil per 1 liter of gasoline. As for budget chainsaws made in China, the situation is slightly different. The ratio of gasoline to chainsaw oil made in China 1:25, that is, divide 1000 ml of gasoline by 25, we get 40 ml of oil. The thing is that in branded chainsaws, a solid assembly and the distance between pistons and cylinders in the engine is much less than that of Chinese chainsaws, therefore, the required amount of oil differs almost twice.

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Use a conventional medical syringe with sufficient volume to measure the correct amount of oil.

Another subtlety. first fill the dry gasoline can with gasoline and then oil. The procedure, on the contrary, is fraught with a poor quality fuel mixture, because the oil is denser, it will stick to the bottom of the canister. what a good mixing here.

Be sure to prepare the fuel mixture in a canister and pour ready-made special fuel into the gas tank! Never cook or mix directly in the fuel tank of your chainsaw!

If you figured out the question of how to breed gasoline for a chainsaw, then on storage conditions and shelf life of the fuel mixture it is worth saying a few words. It is best and easiest to prepare a petrol-oil mixture for 1 liter of gasoline, it is recommended to do this immediately before working with the tool. Chainsaw fuel tanks have a volume of 0.3 to 1 liter. In the conditions of domestic use, the entire volume of the prepared combustible mixture is rarely used in one session, so the remainder can be saved until the next session. It is necessary to store the fuel mixture in a special canister for gasoline, in a dry, dark place. It is optimal to count that the shelf life of the finished mixture will be 7-10 days. The fact is that the oil on the market now is not synthetic, but organic, that is, natural. After 10 days, all lubricating properties are lost, gasoline simply “eats up” the oil. Naturally, it is no longer possible to use such fuel, this can cause breakdown and failure of the chainsaw.

At the end of the work, it is necessary to drain the fuel mixture, start the chainsaw, the tool will stall (so that the saw has a dry carburetor) and now you can leave it until the next operation.

Unsuitable fuel mixture must be disposed of.


The main component of the fuel mixture for chainsaw engines is gasoline with an octane number of at least 92. Consumables with expired storage, made on the basis of gas condensate, which have water and mechanical impurities in their volume, are not suitable for the preparation of fuel.

  • The opinions of experts on the use of gasoline of different brands are ambiguous. On the one hand, the incomplete compliance of domestic gasoline A-92 with European standards is recognized.
  • On the other hand, the quality of A-95 gasoline is questioned due to the high content of anti-knock additives. It is possible to use this fuel for the preparation of fuel for a chainsaw only with full confidence in its quality.
  • The difficulty lies in the presence of various improving additives, with the help of which unscrupulous manufacturers and distributors increase the performance properties of motor gasoline with a lower octane index.

Also, irreversible changes in the working properties of the fuel occur when it is stored for a sufficiently long time in a plastic container, regardless of the level of its petrol and oil resistance.


Stricter criteria for the selection of the oil component. In the best variant, it is a mineral or semi-synthetic engine oil recommended by the manufacturer, intended for operation in high-speed two-stroke air-cooled internal combustion engines.

The advantage of mineral oils is their lower cost. Their more expensive semi-synthetic and synthetic counterparts are distinguished by improved performance and compliance with environmental standards.

  • maintain working properties in a wide range of operating temperatures;
  • do not form carbon deposits;
  • contain detergents, antioxidants, preservatives and other additives useful for the operation of the power unit.

Storage advice

It is better to prepare the mixture in an amount that should be enough for one-time work. The problem lies in the irreversible deterioration of the working properties of the mixture during storage. The finished composition is recommended to be used over the next few days.

A mixture of gasoline with a month-old oil impairs the traction capabilities of the engine. There is also the formation of resinous compounds in the fuel system and intense carbon formation in the combustion chamber, loss of mobility of the piston rings.

  • With minimal damage to quality, it is advisable to store gasoline with oil for no more than 2 weeks. At an ambient temperature of 25 degrees Celsius or more, this period is reduced to 8-10 days.
  • In order to save money, the expired mixture can be gradually consumed by mixing it into the fresh composition in an amount of no more than 10% of the total volume.

In order to avoid problems associated with the failure of the fuel system, it is recommended to filter the prepared mixture through a non-fiber material such as suede, or a fine-mesh twill weave, a metal mesh.

Benefits of branded oils

Many domestic and foreign manufacturers specialize in the production of special motor oils, but the highest rating indicators are for branded products from STIHL, Husqvarna and Makita.

Only in certain parameters are the domestic motor oils of the Lukoil trademark inferior to the branded assortment.

The list of advantages of branded engine oils includes:

  • economical consumption;
  • stability of performance under difficult operating conditions and during long-term storage;
  • minimum amount of toxic compounds in exhaust gases;
  • almost complete absence of carbon deposits.

How to mix fuel for chainsaw

According to the American classification, API-TB oils can be used for work in household and professional models. The Japanese counterpart is JASO-FB and JASO FD. Preparation of a combustible mixture using oil for 4-stroke engines is strictly excluded.

Red, green or any other color of oil determines the product belonging to the assortment of a certain manufacturer, therefore, when determining the characteristics of the material, it is not taken into account. Be extremely careful when choosing a motor oil of unknown composition and origin.

Until you receive additional information about the quality and operational parameters, it is better to temporarily refuse to use such material.

It is allowed to mix motor oils of the same type in composition and purpose, produced by brands known for the quality of their assortment. Under no circumstances is it allowed to mix mineral and synthetic oils.

Working proportions of the fuel mixture

The standard gasoline to oil mixture ratio for carburetor chainsaw engines of various models is 40: 1 and 50: 1. This proportion provides full lubrication of the rubbing parts of the crank mechanism and piston group, and also does not prevent the complete combustion of the gasoline-air mixture.

Taking into account external factors, the fuel mixture can be adjusted in the direction of increasing the amount of oil. Such a need arises at the stage of running in a new tool, as well as at high air temperatures. In this case, the standard oil dosage is increased by 20%.

In practice, an increase in the percentage of oil in the fuel mixture is used if its characteristics do not fully meet the stated requirements. How much oil per liter of gasoline is needed in each case is determined by the sawman himself.

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Features of preparation and storage of the fuel mixture

Safety regulations prescribe to dilute gasoline and oil in a metal canister. This eliminates the risk of static electricity and fuel ignition.

Experts advise to pour oil into an incomplete container, mix thoroughly, and then top up with clean gasoline to the specified level. Saving working time by preparing the working mixture directly in the gas tank of the chainsaw should be excluded from everyday practice.

This technology is fraught with fuel system failures due to the ingress of a large amount of oil into the carburetor, the need for disassembly and thorough flushing.

Self-selection criteria

A large assortment allows you to choose oil that fully corresponds to the class and characteristics of the chainsaw, the conditions of its subsequent operation.

  • For budget models, you can use oils of the Standard category, for professional chainsaws, consumable lubricants of the Super and Ultra categories are recommended.
  • To prepare a full-fledged fuel mixture for a chainsaw, it is advisable to use branded oils or their branded counterparts recommended by the operating instructions. In particular, STIHL and Husqvarna engine oils of the same composition and application are completely interchangeable.

Experts recommend that owners of chainsaws exclude from the scope of attention motor oils intended for two-stroke engines of mopeds, boat motors and other mechanized household appliances.

The power units of this equipment operate in more comfortable conditions, which makes the requirements for their operational characteristics less stringent.

How to thin for STIHL, in particular for the MS 180

The manufacturer recommends for the engines of its chainsaws, including the STIHL 180 MC model, HP Ultra oil in a ratio of 1:50. It provides the highest power, service life and cleanliness of the internal combustion engine. It is also recommended to use engine oils in STIHL labeled containers. It is important here to purchase original, but not counterfeit products.

A mixture of gasoline with some oils is considered perishable, it is recommended to use it no later than 10-30 days after preparation.

In the case of a mix of oil and gasoline recommended by Calm, this is not the case. The mixture can be stored for up to 2 years. After long-term storage, the container must be shaken to mix possible sediment.

Motomix. STIHL ready-mixed fuel mixture, very convenient when there is no time or opportunity to mix fluids on site

Correct ratios and preparation for popular producers

Different manufacturers recommend different proportions for their chainsaws. Their observance should be treated with attention. Lack of lubrication leads to the failure of the internal combustion engine. Excess. to loss of power, smoke, carbon deposits with all of the above problems.

How many grams of oil per 1 liter of gasoline do you need for Makita saws

Makita recommends Makita high performance two-stroke engine oil for its gasoline saws. Makita pays attention to environmental protection. Oils of this brand have a minimum of polluting emissions.

Recommended proportions are 1:50, 20 ml is poured into 1 liter. Replacement with analogues of other brands is allowed, provided they comply with the international standard TS-3. At the same time, it is recommended to add more oil in the instructions, 1:40, for 1 liter of 25 ml.

When working on gasoline without oil, the engine of any chainsaw fails in a few minutes. Dry friction without lubrication destroys the cylinder mirror, piston rings, piston pin liner, crankshaft bearings, etc. Also, from overheating due to increased friction, the engine can jam.

For all chainsaws, unleaded gasoline with an octane rating of at least 90 is used. That is, AI-92, AI-95, AI-98. over, the most common and suitable option is AI-92. Gasoline with octane numbers 95 and 98 is recommended in cases where the engine runs mainly at high revs. We also recommend reading in more detail about the choice of gasoline.

An example of preparing 1 liter of a mixture in a ratio of 1:50.

  • The capacity is approximately half (0.4-0.6 l) filled with gasoline.
  • Pour 20 ml of oil into a clean liter container.
  • Close the lid, shake the fuel until it becomes uniform in color.
  • Gasoline is added to a liter, the lid is screwed on, the container is turned over several times.

how to mix oil for a chainsaw the easy way

Gasoline already diluted with oil mixes very easily with refilled clean gasoline, therefore, it is not necessary to mix strongly again.

The oils are painted in different colors, red or green. Therefore, by the uniformity of the color of the mixture or clots of different colors, you can clearly see whether the oil has stirred or not.

When oil overflows, the engine emits smoke. But smoke immediately after a cold start is in most cases typical for cold engine operation. After a few minutes of operation and warming up of the combustion chamber, the smoke disappears.

How much oil per liter of gasoline to pour into Champion chainsaws

For its chainsaws, Champion recommends the use of Champion 2-stroke, high-speed, air-cooled ICE oil. Proportion 1:50, that is, for 1 liter of gasoline 20 ml.

In addition to the branded Champion, it is allowed to use oils for the same engines of other brands. over, it must comply with API TV / C or JASO FC / D standards, which must be indicated on the canister label.

Can I mix oils of different colors and brands??

It is not recommended to mix oils of different brands. First, they can be performed on a different, incompatible basis. synthetics, semi-synthetics, mineral. Secondly, different brand oils may contain different additives. How they can chemically react with each other and what is formed as a result, it is impossible to predict.

The main thing is that there is simply no need to do this. It is more rational to add the rest of one brand of oil to gasoline and work out a mixture. And then start using another oil.

Pay attention to the labels, these are 3 different oils from STIHL, all differ, both in characteristics and in color. They cannot be mixed with each other, as the manufacturer himself writes about in his instructions.

The ratio of oil and gasoline for chainsaws of famous brands, the correct proportions, and also what should not be diluted

The preparation of the fuel mixture is a very important process, both the consumption of gasoline and the service life of the chainsaw depend on the observance of the correct proportions of gasoline and oil. Many are accustomed to stirring 1:50, but this is not correct, because the ratio of these two components is different for all manufacturers. Within the framework of the article, we will figure out what the most famous manufacturers recommend to fill in, in what proportions, and also give an example of how to dilute and prepare fuel correctly.