2003 Piston slap

by john
(Toronto Canada)

I own a 2003 coupe for the last 14 months 31,000 kiliometers

it has piston slap at start up all , then as it warms up its very faint.
will changing from 5 w 30 to 10w 30 mobil 1 help or going to 0 W 30 be better.

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