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Bob, I also notice that my mpg increases.....(more (archive)
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Posted by Erwin on September 12, 2000 at 14:58:46:

In Reply to: How much longer will synthetic.... posted by Brett on September 12, 2000 at 00:15:24:

with me switching to Mobil1 0W30 from BMW 5W40.
Coincidentally, I also swapped my intake with ECIS at the same time. Don't know which one is responsible for it though. It's a quite significant increase, my avg. mpg went from 21-22.7-ish. Any thoughts?

Erwin
97M3/4



How much longer will synthetic oil last than regular 20w50? Also, somebody here recommended that I use 0w30 synthetic.. is this a good choice? I drive my car somewhat hard, but i want some oil that will last at least 4k miles, if possible. thanks!

-Brett




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