I recommend you try a product called "Opti-2". It is a 2 cycle engine lubricant that produces no smoke from the exhaust, and it can be used in any 2 stroke engine (that requires oil mixed in with the gas) - regardless of the mix ratio. From what I understand - it has teflon in it - and it treats the metal to reduce the friction, unlike oil - which just relies on a thin film barrier to reduce friction. I have been using it in my gas 2 strokers - and it is amazing! No smoke, fires right up, and runs like a champ. You can use it in your chainsaw, your weedeater, and your big R/C gasser - regardless of the mix ratio. I got mine from our local Ace Hardware store - and the fellow that owns the store said that if he had his way - Opti-2 would be the only 2 stroke additive he would stock - it's that good! It comes in a small plastic tube in either 1 or 2 gallon sizes. Our CE (Civil Engineering) unit on base has been using it for years on all their 2 strokers - and they "swear" by it!