986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - noisy idle noise

Gilles · 04-18-2019, 10:41 AM

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.

04-18-2019, 10:41 AM	#3
Gilles Registered User Join Date: Dec 2009 Location: Orange County, CA Posts: 1,993	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 11:40 AM.