What does Sea Foam Motor Treatment do in my eninge oil? [SOLVED]

Thanks for the question John. Sea Foam is 100% petroleum oil that is miscible in petroleum motor oil. Miscible means that it mixes and disburses evenly throughout the motor oil phase. It does not evaporate or burn off when used in the crankcase. Hope this helps!

Does the engine have to be cool when using in crankcase?

Thanks for the question Jas. The engine can be hot or cold so makes no difference.