Garden

Jonsered 361 chainsaw
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Generally 2 stroke engines work on a ratio of 50:1
100ml of 2 stroke oil in 5L of petrol.
Use good quality 2 stroke engine oil for the mixture, Stihl and Husqvarna both have high quality engine oils, designed for more efficient lubrication and emissions quality.

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Most modern chainsaws, string trimmers, leaf blowers and other small-engine two-stroke equipment recommend a 50:1 oil mix ratio, but some recommend 40:1 and older two-stroke equipment might even call for 32:1.
Use a 40:1 two-cycle oil mix ratio. One gallon of gasoline combined with 3.2 oz of two-cycle engine oil. Unsure of the age of your equipment?
For a 50:1 ratio of gas to oil, use 2.6 fluid ounces of oil per gallon of gas.
1:25 = 1 part oil + 25 parts petrol, or 40 ml oil per litre of petrol when using other brands of oil. Any two-stroke engine oil you use in your petrol gardening tool must have the TC classification.
Your chainsaw will need an unleaded, mid-grade gasoline with an octane rating of at least 89. This is one of the few times you`ll want to spend the money for premium gas. Unlike other small engines, most chainsaws us a high-performance engine. If the octane rating is not at 89, you risk knocking your engine.
Modern gasoline chainsaws run at 50:1 mixture, 50 parts gasoline to 1 part oil. Older chainsaws can require 16:1 mixtures or 32:1 (most common).
For a mixing ratio of 1 : 50 you need 5 litres of high-octane gas and 0.10 litres (100 ml) of STIHL two-stroke oil.
You can do that but I wouldn`t 40 to 1 means 40 parts of gas one part of oil. 50 to1 means 50 parts of gas to 1 part of oil. So the 40 to 1 mixture is more oily and provides better lubrication for your piston rings.
STIHL recommends that customers use a minimum of 89 octane fuel. If a customer chooses to use a 91 or 93 octane fuel, no damage to the engine will result. However, using an 87 octane fuel could lead to serious engine damage.

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Do I need gas and oil mix – Poulan Super 250a Chainsaw Plate
ANSWER : I think Poulan uses a 40:1 ratio to one gallon of gas, however I have always used 50:1 the same as my sthl saws with no issue. I would rather have more oil mix that to little.

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I need the gas mix oil ratio for the Poluan Pro 42…
ANSWER : 40:1 gas to oil ratio.

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DCS520 PETROL/OIL RATIO
ANSWER : 40 to one is a good mix

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Do you mix gas and oil in this trimmer – Ryobi 30 Cubic Centimeter Curved Shaft Gas Trimmer
ANSWER : Yes. Verifythe ratio, either 40:1 or 50:1

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Oil-gas ratio – Homelite ZR10926 16 Chain Saw
ANSWER : Hi. 50 to 1.

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How do u mix the 50/1 ratio oil and gas mixture
ANSWER : Mix 2 1/2 oz of 2 cycle oil into 1 gal of gas

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Whats the best ratio of gas and oil should i use on my poulan wild thing 18″ 2375 chainsaw
ANSWER : 50:1 = 2.6 oz oil to 1 US gallon of mid grade gasoline.

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What is ratio of oil in gas – Hitachi RB24EAP 23.9cc 2 Stroke 170 MPH Gas Powered Handheld Blower
ANSWER : Anywhere between 25:1 and 50:1

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