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Old Mar 9, 2021 | 10:02 PM
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pizzaguy
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Joined: Jun 2009
Posts: 13,964
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From: Fort Worth, Texas
Default Re: Engine enhancer in a bottle! (2006 CF)

Yea, I am not a fan of MMO or STP or any of that stuff.

I ran 5W40 (5W50 in Georgia's summer heat when I knew I was going to push the hell out of the engine) in my Graphite when it had those miles on it. I gave up on 0W40 by the time it had 60,000 miles on it cause I could hear noises I did not like and with a hot engine, 0W40 produces as little as 3 pounds of pressure at 600 rpm. (Put an oil pressure gauge on that engine and you will never put 0W40 in it again.)

0W40 is just too thin, even MB recommends 5W40 and has since 2011. I only run 5W40 in my SE, it's at 54,000 now.
 
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