Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

I have used almost anything in the M90 so far with no problems- gasoline, white gas(camp stove fuel), lighter fluid...It seemed happy no matter what. I've mixed the fuel with castor oil, synthetic 2 stroke racing oil, and Marvel Mystery oil. I like the mixed 2 stroke oil best so far but I am a far cry from making any comprehensive studies. I've settled on the camp stove fuel for the time being mainly because I bought a gallon and it doesn't sour like ethanol. But, having read Gil's post concerning a product here(branded TruFuel I think) that is non-ethanol pre-mixed fuel and synthetic 2 stroke oil at a ratio of 50:1, I might switch after I run out. I already keep TruFuel on hand for my chainsaw and string trimmer.