I have been using Lucas oils for a long time. Add Lucas oil stabilizer to your car or truck at next oil change. It will get you a few more miles per gallon. I put it in all the high performance racing motors that I build. It is compatible with regular and synthetic oils. Put some on your hand and then try and wash it off. It clings to all metal parts and it has no problem with heat. Ever since they came out with a 2 stroke oil I have used it with great results.