5w30 or 10w30
5w30 or 10w30
Elder User
Joined: Feb 2005
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From: Kansas City, KS
5w20 or 5w30 and Motorcraft filter. On my old 00 5.4 it was only happy with motorcraft always had the tap with the others. If that doesn't help try a different brand of oil. The same 5.4 was a bit noiser with Mobil compared to Castrol Syntec and Havoline dino.
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Fleet Owner
Joined: Jan 2004
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From: Brentwood,CA
if it has the common piston slap no oil will take up "space" they have skirtless pistons. the piston slap has proven to be harmless in these engines.
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Junior User
Joined: Oct 2006
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From: Mo
Originally Posted by ford390gashog
if it has the common piston slap no oil will take up "space" they have skirtless pistons. the piston slap has proven to be harmless in these engines.
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