I Wanna Go Fast!!!!
which do you prefer and why???? Everyone
so If i run this is my 6.4 what weight am i looking for. I was just about to start useing rotilla tI use the amsoil because my truck runs better, starts easier, Even after 10,000 miles I swiped some off the dipstick to feel how it was, I tel you it was black which is norma, but it was slippery as hell still and is not all broken down watery looking like regular oils do after 5,000 miles. To not have to change your oil until 15,000 miles sever service/25,000 mile normal service is awsome. I stand behind the product.