Walmart's oil prices are hard to beat when you buy oil in the 5 quart jug and then tack on 3 more quarts. Mobil 1 Extended comes out to be around $40 something altogher then I just take it to Sam Pack and let the do the labor and grab a fitler for about $15 more.
Yeah all of these oil test out pretty well and meet gov't guidelines based upon their change interval. That's not the point though. I have been researching like Luke for the absolute best for our cars. Seems like Amsoil and Royal Purple is the consensus favorites based upon Coyote oil samples. Yeah Motorcraft works just fine, but it's not the best for our engines. Either way all of these oils will probably take the car to 100k, but again I want the proven best especially when they all cost around the same (by tier at least) and have extremely similar change intervals. The industry and tuners will eventually find out as Coyotes age.
Last edited by saunupe1911; 05-16-2013 at 10:07 AM.
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