I'm,running the Amsoil signature series 0/20 in my 19 taco, 5/20 in the wifes grand caravan 3.6, 5/20 in my old f150 that had 200k miles on it when I got rid of it, 5/20 in my 17 ram hemi that I traded on my taco, 20/50 in all three holes of my Harley for 50k miles, 5/30 in an old dakota. Ive...