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		986 Forum - The Community for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > Boxster General Discussions
noisy idle noise - "diesel" like sound

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04-18-2019, 11:41 AM	#3
Gilles Registered User Join Date: Dec 2009 Location: Orange County, CA Posts: 1,998	Perhaps lifter knocking My CS developed a lifter noise while idling and a friend of mine (Porsche specialized shop) suggested to try Liqui Moly "hydraulic lifter additive" which I used on the next oil change (LM 5-W40) and it helped a lot to reduce the lifter noise, you may want to try it. Last edited by Gilles; 04-18-2019 at 12:40 PM.

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