Valvoline Premium Blue

[Lonestar10]

I run Rotella 15/40 and would run it even if it went up 5-10 bucks a gallon as ive ran it in every diesel ive ever owned and i have yet to have an oil related issue while using it. and im sure others have had this with other oils but its what ive used to me its tested and true. everything comes down to doing correct maintenance and not being an asshole to your engine by missing maintenance intervals or ripping it up full throttle on every stop light. and i beleive Rotella has some of the higher zddp type numbers in oil tests which is also what i look for in my racing oil that i use in my 67 fairlane to protect the cam.