Quote:
Originally Posted by ukiltmybrutha
I would ask more at bobistheoilguy but the conversation usually degenerates when mentioning that my question is FE based.
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Tell them you're trying to shave a tenth off of your quarter time. They value that a lot more than something practical.
Quote:
Originally Posted by JSH
In general: Yes. It is amazing how much of our fuel economy targets are hit with new fluids...
In practice: Run the fluid recommended by your manufacturer. It takes us more than a year and millions of miles on dynos, test tracks, and road testing to certify a new oil. There are a bunch of little tweaks that have to be made to use thinner oils. Changes to bearings, seals, oil passages, etc.
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+1 on the results
and the dangers. Even the "special" kids over at legacygt.com back a dozen years ago were warning about changing to synthetic on their little high compression turbos. They still couldn't bring themselves to admit that "better" wasn't actually
better, but they did warn about leaking through seals and that you needed to check your level. But, you know, it was "better".