Choosing A Premix Ratio for Older 2-Stroke Engines
A reader asks: What is the correct oil to gas mixture for a 1973 Ski-Doo TNT 340 snowmobile? Is it safe to use synthetic oil in older 2-stroke engines like this? Our answer: The ratio suggested by Ski-Doo 45 years ago would not be relevant today. Oil technology has changed dramatically since the 1970’s. The…



