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Which Grade of Oil would help lesson Piston Slap ??

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Old 20 September 2006, 04:05 PM
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DeanF
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Default Which Grade of Oil would help lesson Piston Slap ??

As Piston Slap is at it's worst when cold Is it better to have a thinner oil on the cold Start Grade ??
i.e 5/40 or 5/50
or a thicker oil when on the Cold start Grade
i.e 10/40 or 10/50 Etc

My98 Approx 83K Miles

Would a thicker grade oil help cushion the Piston Slap effect until warm or is this to much of a Trade off for the Crank Main bearings Etc which would benifit from a thin Grade at startup ??

Thanks
Dean

Last edited by DeanF; 20 September 2006 at 04:09 PM.
Old 20 September 2006, 05:00 PM
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dr jim
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I have found that my piston slap is no more with a thicker (15-40) oil ,newage sti
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