They're using one of Smokey Yunick's rules... (archive)
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Posted by Shawn D. on April 23, 2001 at 07:27:17:
In Reply to: Anyone tried Metric Mechanic oil pump? posted by Terry on April 22, 2001 at 18:39:56:
(posted from: proxy2b.lmco.com (192.31.86.35))
... when they say 10psi/1000RPM. If your car has more than this now, you'll be wasting your money and adding a bit more parasitic drag (i.e. you'll get some horsepower loss). If your pump needs to be replaced anyway, then it might be worth it.
I'm pondering replacing my stock oil pump with the metric mechanic modified one while R&R the piston rings.
Thoughts?
Terry
"86 535i
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