Thread: Roush 4020s-r ?
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Old 08-09-2014, 10:24 AM
madmaxx madmaxx is offline
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with 10W30 thats pretty good. I would say anything over 20 psig at idle (800 rpm) and anything over 50 psig above 5k rpm's. be careful when people say "idle" some mean 800 rpm, some mean 1000 rpm, some mean who knows...
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