Originally Posted by bdpAKAknox
im running 5w30 extended Amsoil.
Run it all the way to 7500 with no filter change, my UOAs still come back fine.
how much is it for a blackstone lab test like that?? Where do I go/send it to get it tested?? 7500 miles is pretty damn far on an oil change kinda scares me to be honest with you, esp with the filter ont being changed.