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      05-11-2013, 02:05 PM   #35
F32Fleet
BMWCCA since '03
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Drives: 2015 435i
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Quote:
Originally Posted by floydarogers View Post
It isn't politics so much as need: most of the US isn't cold enough to require higher cetane to help while starting. And after the engine is started, cetane appears to have little or no effect on mileage or power.
True but I'm thinking wear scar of less than 460um.