B BillyE Joined Jun 10, 2019 Messages 110 Location SC Oct 31, 2019 #21 It meets Fords F1 spec so phosphorus must be over 1000 ppm. Either that or Ford implemented the fabled 6.7 valvetrain wear test to approve this oil.
It meets Fords F1 spec so phosphorus must be over 1000 ppm. Either that or Ford implemented the fabled 6.7 valvetrain wear test to approve this oil.
K kschachn Joined Dec 26, 2005 Messages 27,821 Location Upper Midwest Jan 22, 2020 #22 Originally Posted by merdog Thanks for the side by side comparison! I'll keep on using my 5w40 I get much better fuel milage. Compared to a 15W-40? No, that's not physically possible. And didn't you just use 15W-40 in this thread? https://www.bobistheoilguy.com/forums/ubbthreads.php/topics/5329575/uoa-17-dodge-ram
Originally Posted by merdog Thanks for the side by side comparison! I'll keep on using my 5w40 I get much better fuel milage. Compared to a 15W-40? No, that's not physically possible. And didn't you just use 15W-40 in this thread? https://www.bobistheoilguy.com/forums/ubbthreads.php/topics/5329575/uoa-17-dodge-ram
