don't use it if you have an excess of 100k miles. it could break down carbon that's deposited and settled into gouges, scratches, etc and you could lose compression after it.
Originally Posted by 1siccEJ2
so basically your saying on a high mileage engine, its good to have all that built up carbon in the combustion chamber and on top of the pistons all because of the compression increase? i duno . .