Like this: Here are some examples: I have 2.5 liters of gasoline that I want to convert into 2-stroke fuel for my bike that takes 40:1 Gas to Oil mixture. There are a few good reasons to run a fuel/oil mix at ultra-thin ratios in a two-stroke. Just divide the liters of gasoline you have by the ratio. A cheap mineral oil might need to be run at 20/25:1, whereas a fully synthetic race 2 stroke oil could be run at 50:1 or leaner. Petrol Use branded 89 octane or higher unleaded petrol known to be of good quality. (Use Petrol 95 Octane in Malaysia) How to read ratio charts: Ex. When using McCulloch two stroke oils, the gasoline to oil mix ratio is 40:1 (1-gallon of gasoline to 3.2oz. of McCulloch oil) Oil is offered in pre measured 3.2oz containers to mix with 1 gallon of fuel. AMSOIL SABER Professional Synthetic 2-Stroke Oil is tested and proven at any mix ratio up to 100:1. Depends on the quality of the oil. Amount of Gas on hand / fuel ratio = Oil needed. Problem solved. This is a lot easier. Done. STIHL Premium two-stroke engine oil comes in individual bottles of 100ml, 200ml, 500ml and 1000ml (1 L). Two Stroke Fuel Ratio Chart. This manual will provide a definitive answer on the correct gas to Prepare you fuel, oil on a bench or other suitable surface and have a clean rag and medium sized funnel handy. Or 80:1. MIXTURE RATIO IS 25:1 Fuel mixture at the rate other than 30:1 may cause damage to the engine, Ensure mixture ratio is correct. High ratios such as 100 to 1 are usually environmental reasons, such as for outboard motors. That means you can mix one can of fuel and use it in all your two-stroke equipment. An easy way to work out the right amount is to take the volume of gas in mls and divide it by the ratio you want. E.g You want to mix your fuel at 40:1 and you have 8 liters of gas. Because i used 20ml of 2-stroke oil to make one litre of mix because that's what my brushcutter manual said and when pouring the petrol i accidently went over the 1 litre mark on the mixing container and decided to put 10ml more oil in to avoid the situation of too little oil now i'm worried the brushcutter will smoke like green material on a fire. The additives are of highest quality and are especially chosen to lessen deposits an the crankcase which can arise from using low-quality fuel. Designed to meet all the tough challenges 2-stroke engine oil can encounter Husqvarna HP 2-stroke oil is also formulated to work well with low-quality fuels. FUEL The engine uses two-stroke fuel, a mixture of petrol and 2-stroke lubricant 30:1 . We recommend the following mix ratio: for STIHL Premium two-stroke engine oil 1:50: 1:50 => 1 part oil + 50 parts high-octane gasoline. 25:1 (pronounced 25 to 1) means for every 25 parts/units of petrol you must add 1 part of oil. If you want to use 50:1, use that. Oil is offered in pre measured 6.4oz containers to mix with 2 gallons of fuel. For best value, use 100:1. You could mix at 71:1 if you want. Itâs up to you. I will divide 2â¦