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Old 10-08-2008, 04:00 PM   #21 (permalink)
nascarnation
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Quote:
Originally Posted by dremd View Post
Not to go off subject; but synthetic oil does allow you to increase FE; not because of magic; because you can run a lower viscosity oil, which flows better; saving energy.
If you could run a 5W20 syn, there's no reason you couldn't run a 5W20 petro. Viscosity is viscosity I think.
Perhaps a 0W20 syn might be better in cold weather (they don't make 0W20 petros that I'm aware of).

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