What kind of gasoline to put in a chainsaw?. The criteria for selecting engine oil

What gasoline to pour in a chainsaw

A chainsaw is a handy unit that can solve a lot of household problems. Runs on fuel that has to be prepared by oneself just before filling the tank. Those who have purchased a functional device for the first time, are interested in the question of what gasoline to pour into the chainsaw. Avoid breakdowns and extend the life of the device is possible only if you follow the manufacturer’s recommendations, specified in the instruction.

Modern brands of chainsaws (Husqvarna, Partner) from foreign manufacturers will work smoothly on gasoline AI-92. it is ideal for the engine

The user manual may also indicate the brand 95, but it must be filled with caution. The quality of this gasoline is now being questioned, its octane number is increased with various additives

This is detrimental to the chainsaw engine, which can lead to the overhaul of the unit. Its cost is at least half the cost of a new model, not including spare parts to be replaced.

For devices from domestic manufacturers (Ural, STIHL, Druzhba) gasoline AI-80 is recommended

It is important for the user to keep its consumption to a minimum

Gasoline and oil proportions

In view of the two-stroke type of engine, fuel is purchased separately in pure form, then mixed with oil designed specifically for this version of the engine. Most experienced users mix the substances in proportions of 1:50. In the photo you can see the popular high quality products used to prepare the fuel mixture.

Important points to be observed:

  • domestic chainsaws (Ural, STIHL, Druzhba) work with oil brands M8-B, M-12TPU, M8-B, TP, MGD-14M, sometimes foreign variants can be used the recommended proportion. 100 g of oil for 2.5 liters of gasoline AI-80
  • foreign models (Husqvarna, Partner) work on foreign-made oils (1:50 or 1: 40), characterized by minimal consumption.

How to prepare the right fuel mixture

When buying gasoline for a chainsaw and oil, it is worth thinking about additional accessories. To measure and be able to pour the mixture into the chainsaw, the following tools are used:

  • A container for dilution (plastic or metal),
  • syringe,
  • measuring bottle (to measure gasoline),
  • dispenser,
  • watering can (pour it into the chainsaw).

A handy tool is the STIHL dispenser bottle (pictured) which allows you to do everything quickly and accurately by measuring out the right amount of oil

When choosing gasoline for a STIHL chain saw (Friendship, Husqvarna, Partner) it is worth paying special attention to the second component

Different manufacturers’ oils have different tints. HP products are red, the premium synthetics are mostly green. If you take gasoline for a chain saw Husqvarna, then the oil must be of the appropriate brand, not cheap (by color green or blue). Here’s a video of the fuel mixing process.

Useful tips

Experts and manufacturers recommend not making a large amount of fuel and storing it for a long time. Oil and gasoline may “behave” differently in the mixture, depending on the brand, quality, degree of additives and additives. Oxidation and crystallization processes. The result can be disastrous and carry additional financial cost to the user: incorrect operation or engine failure.

Fuel is prepared for up to three refuellings, mixing in containers made of metal or strong plastic. Conventional plastic breaks down, reacts with gasoline, spoiling the fuel composition and creating a risk of sudden ignition.

Gasoline consumption and operating time

An important question is the gasoline consumption of a chainsaw, because the user must understand what to count on.

Fuel tanks hold about 0.5 liters. When the power of the device is 2 kW, the consumption of gasoline with oil will be about 1.2 liters per hour. Translating into user-friendly language. about 30 minutes the chainsaw can work in an uninterrupted mode at maximum speed. Less powerful devices have a smaller tank volume, the gasoline consumption is controlled by the owner himself.

Over time, you will learn to independently perform service maintenance of this household unit. The main thing is to keep it in working order and use only quality fuel. It is necessary to mix with observance of safety rules, so as not to damage your health or the environment.

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Комментарии и мнения владельцев 49

I feed my Mole single axle tractor with 92. Although 76 used to be a good digester. Never winterized in 15 years. Similarly with the saw and trimmer. Our cottage season ends very abruptly and unexpectedly, so I can not prepare. Nynchette finalized last year’s mixture of 5 liters, all is normal starts and runs.

How to Mix Oil and Gas: The 2-Cycle Engine Fuel Recipe

Been pouring good 92 for years.If 2-stroke, then gasoline and oil (it is desirable to pour without over and under oiling. it is harmful). I only use it to work. Can’t leave it out. The mixture doesn’t last long. It’s better to run in small portions. If there’s not much left, I drain it.Only leave an empty tank in the winter.

I leave a little gas in the 4-strokes in the winter. But I shut off the gasoline supply to the carburetor and wait for the rest to run out.

Oil in the 4-stroke motorblock change every spring before starting work.

Experience so far is small, only one winter. I’ve been using STIHL oil. it’s too expensive. All last season and this one I’m using 92 gasoline. Champion oil from the Chinese manufacturer. Then I’ll switch to Stiele oil. Read the forums. canned for the winter or not. I talked to my leskhoz grandparents and they told me not to worry about it. Finished the season, put all the tools in the garage. I filled it up in the spring and let’s go I tried it. it was OK, it started easily.

The main thing is not to leave in the winter, and in general with a mixture in the tank. Empty and let it work off the residue. The mixture will oxidize quickly.I used STIHL oil. it’s expensive. It’s better to have 92 gasoline.

In 5th year I leave it as there is gasoline and so I leave it ! Grasshopper and chainsaw work half the time

Iyu 100 from Lukoil) shit myself began to mow))) Of course 92 Husqvarna oil, gasoline do not drain for the winter, but before the season poured out and pour a new one, more than two liters of mixture do not do t.They say you can’t store gasoline and oil for a long time!

I store with gasoline, then pour a new 92, and change the spark plug in the season-will start with a bang

The mixture is stored for no more than 5 days.Then it breaks down and you can’t use it. You have to work it out for 5 days. It’s convenient to mix it in a 5 liter bottle. If you don’t need much mix, it’s in a special Stilev liter bottle, in a spout-cup for oil.I mow with Stihl myself and use 92, but I poured 95 for 5 years and it was OK. For the winter, it must be preserved with a full drain of fuel and a teaspoon of two-stroke oil in the cylinder. And pull the starter a few times.

Why can’t you use it after 5 days all of a sudden?? And what does it split into?? It’s atoms or something! When I was a kid, in my dad’s motorcycle, of course, it would split overnight until the tank was almost empty. And now what if? It won’t start or something?

It’s a modern myth of shitty quality. If you remember in your childhood at my grandfather / grandfather mopeds “Riga” just did not pour there and it drove. What about now?- 5 days of storage, then it splits, drain it for the winter.

Then my gasoline’s all wrong if it starts with a month’s worth of old gasoline!

I mean, they’re just fooling around. I’ve had it since last year and it’ll start in the spring. I got a chainsaw, a drill, a lawnmower. I don’t drain anything if there’s anything left.

It splits. it’s a modern myth of shitty quality. If you remember in my childhood at my grandfather³’s mopeds ³”Riga³” they poured everything into it and it worked. What about now?- Keep it for 5 days, then it’ll split, drain it for the winter.

For the time being. Pistons don’t wear out right away. It might work, but it’s better not to risk it. It’s expensive and you want to save it. The analogy with the Soviet motorcycles is interesting and touching. My Carpathians didn’t know how to fill it up either. But this will not work with Japanese scooters and Canadian snowmobiles, I’m sure. I don’t want to try it. It’s the same with high-tech lawn mowing equipment. Here’s the bottle. It takes a minute to mix it up. All things considered. Is it really so hard to follow the recommendation of the manufacturer??

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Why choose petrol for your lawnmower?

The question of fuel selection for a four-stroke engine is no less important than the task of how to properly dilute gasoline with oil for a two-stroke engine. The motor of any lawnmower, not powered by electricity, is very demanding on the quality of fuel and oil. In this regard, the use of fuel, which in its characteristics differs from the manufacturer’s requirements, leads to a reduction in engine life, as well as possible damage.

Such unfortunate prospects are due to the fact that the internal combustion engine of a lawnmower does not differ much from that of a car engine. It also requires a certain type of fuel: for example, a machine with a diesel unit will not go on gasoline, requires only diesel. And vice versa.

In order for the grass cutter to work steadily, reliably and efficiently, it is necessary to use not only high quality consumables, but also suitable for it according to the instructions. Next, let’s try to understand the question, what kind of gasoline you need for a lawn mower, in more detail.

Gasoline for chainsaw

For domestic gasoline saws (Ural, Druzhba, etc.).Gasoline AI-80 is used. You can use domestic oils, such as M8-B (or early marking AC-8.10), M-12 TP, M-12TPU, MGD-14M. It is also possible to use imported oils. In any case, the proportions when mixing oil and gasoline should be 1/25, that is one hundred grams per two and a half liters of gasoline. For modern chainsaws from foreign manufacturers, the proportions are usually 1/40 (100 grams per 4 liters of AI-92), 1/50 (100 grams per 5 liters of AI-92). Use AI-92 gasoline. You can often see that the manual will specify the brand AI-95. But with our quality of this gasoline, the octane number of which is caught up with the additives, I would not recommend using 95 if you are not sure of its quality.

To learn more about mixing ratios:

You can use a syringe, measuring cup, oil dosing device or STIHL oil dispenser, for example, to measure the oil level. Different oil colors from different manufacturers. As you see in the picture above, Stihl HP oil is red and the more expensive synthetics are green. Husqvarna oil may be green or blue.


[important] Tips: It’s better to overfill than underfill! If it says 1/50, you can pour 25 grams of oil per liter and it won’t do any harm, because you are unlikely to get coking. But if you add 15 grams per liter, it is quite possible that it is not enough. Don’t store ready fuel mixture more than a month (it’s better to store it less), because it loses its octane number (gasoline “runs out”). Before the season, deplete or drain the entire tank to avoid loss of gasoline quality and wear and tear on rubber and plastic seals. Never use moped oils. they are designed for lower speeds [/important]

Oil and gasoline dilution tables

Oil grade API JASO Synthetics/min/semi-synthetic
STIHL HP 2-stroke oil API-TB JASO FB mineral
STIHL HP Super 2-stroke oil API-TB JASO-FD half-synthetic.
STIHL HP Ultra 2-stroke oil API-TB JASO FB synthetic
Echo oil 6450109 API-TB JASO FB semi-synthetic.
Makita engine oil 980408607 API-TB JASO FB no data
Husqvarna HP engine oil API-TB JASO FB mineral
Champion 952808 API-TB JASO FC half-synthetic.
Champion TSC-3 oil API-TB JASO FC mineral
Manufacturer Proportions
STIHL 1/50
Husqvarna 1/50
Partner 1/40
Echo 1/50
Champion 1/50
Solo 1/50
Quantity of gasoline (liters) 1/25 1/40 1/50
1 liter of AI-92 gasoline 40 grams of oil 25 grams of oil 20 grams of oil
2 liters of AI-92 gasoline 80 grams of oil 50 grams of oil 40 grams of oil
3 liters of AI-92 gasoline 120 grams of oil 75 grams of oil 60 grams of oil
4 liters of AI-92 gasoline 160 grams of oil 100 grams of oil 80 grams of oil
5 liters of AI-92 gasoline 200 grams of oil 125 grams of oil 100 grams of oil
10 liters of AI-92 gasoline 400 grams of oil 250 grams of oil 200 grams of oil
15 liters of AI-92 gasoline 600 grams of oil 375 grams of oil 300 grams of oil
20 liters of AI-92 gasoline 800 grams of oil 500 grams of oil 400 grams of oil
25 liters of AI-92 gasoline 1 liter of oil625 grams of oil 500 grams of oil
kind, gasoline, chainsaw, engine

Preparing to work

Before starting work, check unit for readiness. To begin with assess the degree of tension of the chain of the device. it is necessary to pull the chain by the upper links with an effort of about 2-3 kg (it is necessary that the shank of the chain in this case is not pulled out of the bar groove entirely, but comes out only a few mm). The bottom links must not sag, but if they do, tension the chain so that it touches the bar with the side links and can be turned on easily by hand. If the tension is too great. loosen the chain a little. The parking brake lever should move without jamming and should click into place.

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After checking the chain, place the saw on a level surface and fill up with adhesive oil for chain lubrication and fuel mixture for the engine. The mixture must consist of gasoline (92 octane number or higher) and two-stroke oil. When it comes to chain lubrication, you should use a special biodegradable oil, because its components guarantee the longevity of the chain saw without damaging the environment.

On demand of a client an employee of Unisoo dealer service center will carry out pre-sale preparation of the equipment: check completeness, assemble the equipment, check the adjustments if needed, fill the equipment with oil and fuel and make control start of the equipment.

Why chainsaws are filled with AI-92?

Chainsaw engines are weak, not all types of fuel work for them. That is, their internal combustion engines work with gasoline that has only certain impurities. If there are other impurities or a different ratio, it can cause an explosion. For example, AI-95 is high-octane, high-quality, premium gasoline. AI-95 is the best in terms of safety. it has impurities that prevent it from detonating. But because of the same impurities can reduce the performance of the chainsaw engine and accelerate the wear of components. You might draw a parallel between putting this kind of gasoline in your saw and using rocket oil in your car.

It is forbidden to use lower octane fuel because of the possibility of explosion.

Chainsaw Bar Oil vs Motor Oil

How to Dilute Gasoline and Oil for a Chainsaw?

Gasoline-oil mix must be constantly maintained in a clean container with markings on the walls. This will enable the chainsaw owner to accurately determine the amount of gasoline and engine oil he is mixing. The material of the container must be resistant to petrol. Metal containers are a good size for this.

Fill fuel and lubricant through a watering can to prevent loss of components. In order for the grease to completely dissolve in the fuel, you need to shake the full container several times. The resulting gasoline mixture should be evenly colored. The material of the container should be resistant to petrol, and make sure there are no deposits at the bottom.

Safety precautions for refueling:

Depending on the design of the chainsaw the refueling process may vary.

Using a special tool:

Find a flat, clean surface for refueling. Put the tool with the oil filling holes facing upward.

kind, gasoline, chainsaw, engine

Clean the chain saw thoroughly with a clean cloth.

Remove the fuel tank and the chain oil tank with a combination wrench or wrench.

Carefully start filling. Make sure the fuel mix is not splashed. Fill the tank with fuel and the oil reservoir with fuel. You can check the fill level by looking at the transparent tank walls.

Tighten the fuel tank caps firmly so they cannot be opened by mistake. Carefully check the tightness of the system. If fuel leaks do not start the engine t.к. This could endanger your life.

Otherwise follow the correct procedure for filling up your STIHL chain saw:

Choose a flat, clean surface for your fill procedures.

Clean any debris from the area of the filler nozzles.

Flip the safety catch up and turn the cap counterclockwise as far as it will go to remove it.

Carefully fill the fuel tank and oil reservoir.

kind, gasoline, chainsaw, engine

Screw the fuel filler caps all the way in and close the latches. If fuel leaks, do not start the engine t.к. it’s dangerous.

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