Does STM-3 work in both 2 and 4 cycle engines?
Yes! In a 2-cycle engine, STM-3 can be added to the gasoline. STM-3 will not allow the formation of sludge and abrasive carbon. STM-3 will restore lost power, while giving protection unmatched by any other oil or oil additives sold anywhere. We have also tested STM-3 on motorcycles and, as with car and truck engines, horsepower increased and engine performance improved.