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M-Class (W163) Produced 1998-2005: ML 230, ML 320, ML 350, ML 400 CDI, ML 430, ML 500, ML 270 CDI

Loud Lifters

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Old Aug 9, 2009 | 10:15 PM
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Blown 330's Avatar
Blown 330
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Joined: May 2005
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From: West Coast
2005 ML 500SE, 1999 Blown F-1
Loud Lifters
My 05 ML 500 with 33k on it has the loud tick on start-up which I believe is the lifters. It only makes the noise if the truck has sat for 2+ hours. Is there any oil additive I can put in it to have it stay quiet so I can just get rid of this POS?
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Old Aug 17, 2009 | 02:51 AM
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bwco
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From: Victoria, Canada
10' GLK
you can try a short OCI with 5W30 synthetic oil or I tried MMO in the crank before. Recently I ran a bottle of Lubro Moly flush and the engine is a lot more rev happy. YMMV !
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Old Sep 10, 2009 | 09:49 PM
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ofhs85
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From: chicago IL
02 ML320
on ml500 if the ticking goes away after it has warmed up then it is carbon build up but if it it there all the time then it is a lifter. make sure you are using 91 oct
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