Piston Slap oil

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Originally posted by Last_Z:
Could AMSOIL 10W-30 help with the piston slap on my 02 Z28?? or should I go to M1 10W-30 or RedLine? I'm currently running M1 5W-30.
Thanks, Rick


Rick, switching to just about any 10w30 compared to 5w30 would help lessen the piston slap. By having the oil a tad thicker on a cold start (when the piston slap occurs) this extra cushion will help.
 
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