I have a 97 d16y8 w/ 200k miles. It doesnt use any oil at all, doesnt smoke, doesnt have any kind of ticks. The motor still runs perfect (leaks a little around the oil pan gasket) but other than that perfect, would it be worth it to start using amsoil? I mean i know I heard its great oil but I mean if i'm going to be building the motor in about a year anyway would it be worth it? I'm running Castrol Syntec right now w/ fram filter. I was going to run ams oil 100% synthetic with a wix filter.