Thread: 5.3 Vortec Oil.......What is best?
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Old 11-22-2003, 08:58 AM
Lockjaw Lockjaw is offline
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I run 10w-30 synthetic in mine. I think it helps with the piston slap, but what do I know.
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15.42 @ 88.xx mph
Stock with K&N filter.
5.3, auto, 3.42's
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