Originally Posted By: addyguy
Agreed - the new synthetic version has Ca detergents in it, and is in a thinner synthetic base.
That said, I don't thing regular STP is bad stuff - it isn't that thick, and it does have some anti-wear additives, and can cushion worn engines a bit. It's not going to seize an engine up!
Any VOA's on this stuff. Years ago they made a new/newer car treatment which was thin and supposed to be decent from what I've read. I wonder if this is similar with a little less ZDDP.