I've used Mobil 1 in every vehicle I've owned for the last 25 years, including three different Ford Rangers, an 89' GMC, a 2004 Pontiac Grand Am GT, a Chrysler 200, a 2003 Durango, and my wifes current 2013 Ram 1500 crew cab w/ 5.7 Hemi with 176000 miles on it. I've never had a single engine...