Never ending debate - best oil weight

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PPV_2018

PPV_2018

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So lets say my oil pressure is good, you guys think there would be any benefit whatsoever to running 5w40 euro or just run the good ole classic 5w30 . . . ?

typically I only run valvoline full synthetic (though I am not a valvoline loyalist, i open to using any brand tbh) because that’s what i have run for many years, *but* I am interested in trying the R&P. @OR VietVet
 

fozzi58

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I have a 17 Suburban and have been using the dealer\GM recommended oil since I bought it. I haven't switched to mobile one or anything like that, even though I use Mobile 1 strictly in my TA.

While various name brands of oil, blends, and weights may make a small difference, the INTERVALS between oil changes are going to make more of difference in engine cleanliness, performance, and longevity than any "specially blended" oil.

My truck get an oil change every 3k miles like its religion. All my fluids are changed at "extreme" intervals. Its at 108k miles, 60k of that with a Whipple pushing 8lbs of boost, a Circle D torque converter, and many miles of hard driving and racing...and there isn't a spec of metal in either the oil or trans fluid.

No ticks, no collapsed lifters, no trans shutters. Everything is running in top shape. I truly believe its cause the intervals between fluid changes\maintenance is a lot shorter than the typical owner.
 

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