I hope its better than it was many long years ago , I used some on our Toyota HI-Ace van,s engine and short time later the top ring broke out of one piston while we were away on holiday . Luckily we were staying with friends in Mckay and he was a mechanic , we pulled the pistons out and found each pistons rings totally covered in the stuff which meant the rings werent able to move around in their grooves which then lead to the pistons heating up causing the top ring to break out hammering the piece of the piston and ring into the top of the piston itself . We replaced all of the pistons so we could get home .