Its just an oil additive, has extra things in it like: PTFE (a teflon additive to reduce wear and aid in anti-friction) and ZDP (zinc antiwear/antioxidant additive). Ive put similar additives in other engines and it made one a little smoother (w/ an oil change) but thats all you would notice as its all internal.
GM usually puts it in new engines for the added protection on break-in and the first startup. On most engines and applications its exactly ashe described it; hope in a bottle.
How many miles does your Catera have?
GM usually puts it in new engines for the added protection on break-in and the first startup. On most engines and applications its exactly ashe described it; hope in a bottle.
How many miles does your Catera have?