Quote:
Originally Posted by Mustang_68_Coup
I run the Mobil 1 in my pickup and Castrol Full-Synth in the little car ... I've never had an oil related issue in either one.
However, it must be also said that I've never had an oil-related issue with any oil. Even when (as a poor person, running cheap shit no-name non-synthetic) I've run many cars for many years and never had any issue related to lube in the engine. I've had mostly Fords, but a few Chevys ... some in excess of 250K miles on them.
My pick up has been mine for over a decade, and I've put almost 150K miles on it with Mobil 1.
OTOH, Don's Lightning has almost 400K miles on it, and he runs the plain ol' whatever-is-on-sale-at-O'Reilly's 10w40 ...
The true key to longevity in an engine is the regularity with which you change your oil and filter!!!
In my opinion, the big names only come with big prices -- not bigger performance.
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For 99.99% of everyone on here what you said holds true.I run the Valvoline durablend in the stang.All my other vehicles use Motorcraft 5w20. Royal Purple is overkill for the majority............