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Old 10-09-2013, 12:02 PM   #18
2012InfernoSS

 
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Amsoil zrod 20w50

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Old 10-09-2013, 12:18 PM   #19
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20 50 seems a little heavy
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Old 10-09-2013, 12:30 PM   #20
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3. 5W30 Mobil 1, API SN = 105,875 psi
zinc = 801 ppm
phos = 842 ppm
moly = 112 ppm

wow penn 1st.. last test i seen (years ago) they was in 3rd.. nice turn around..
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Old 10-09-2013, 01:05 PM   #21
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Quote:
Originally Posted by sycraft View Post
20 50 seems a little heavy
Not on a custom built race motor with larger bearing clearances.
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Old 10-09-2013, 01:39 PM   #22
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Old 10-09-2013, 01:54 PM   #23
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Quote:
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Not on a custom built race motor with larger bearing clearances.
True. Just did not want people putting heavy oil in stock motors
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Old 10-13-2013, 10:39 PM   #24
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I have been using Mobil 1 15w50 for 76k, changing it every 5k. At 10.5 lbs of boost. This one is my daily driver. My other boosted car I run Torco 5w50 SR5 racing synthetic, 15 lbs of boost, real pricey. I drive my daily driver alot so I'm changing oil about every 2 months.
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Old 10-14-2013, 01:49 AM   #25
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so it would seem penzoil would be the best bet when running 5w30 in a stock boosted engine?
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