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Oil weight ???

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Old Apr 4, 2013 | 04:52 PM
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Doug G's Avatar
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Default Oil weight ???

What weight oil would you recommend for a warmed up 6.0L ? (rebuilt) and Street/Strip build.
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Old Apr 5, 2013 | 09:39 AM
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Originally Posted by Doug G
What weight oil would you recommend for a warmed up 6.0L ? (rebuilt) and Street/Strip build.
Its a personal preference more than anything. For me, I like the heavier oil wieghts in my car, usually run a 20-50. Helps keep the oil pressure higher and I think it coats better.
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Old Apr 5, 2013 | 10:04 AM
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According to tolerance of the bearings.
Usually a race motor is built alittle loose.
Valvoline VR-1 20w-50.
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Old Apr 5, 2013 | 11:19 AM
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20/50 is something id personally never run in one of my own motors. Just seems counterproductive.
I always start with a 10/30, and base future viscosity on how it reacts at operating temp.
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Old Apr 5, 2013 | 06:31 PM
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VR1 10w30
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Old Apr 6, 2013 | 07:25 AM
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OK...maybe I'll throw in some 30wt ?

I had the short block rebuilt due to unknown miles and a wiped cam bearing. It was to be a stock rebuild, new bearings and rings supplied by me, and a few other things done (hone,fly-cuts).
The builder used 20/50, and Now that the motor is "broke-in" I was unsure what these LS motors require when they're built up.
I know 5/30 is stock.....
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