Question about 1991 Mercedes-Benz 560
The engine runs great @ 209K miles but sometimes when I accelerate I hear a rattling sound. It goes away when I stop accelerating. What is it?
Run thicker oil epically in the summer. 50 wt Valvoline racing oil worked 4 my 89 s-10
Posted on Jul 25, 2013
Sounds like timeing is out or you need higher octane gas
Posted on Jul 14, 2009
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Posted on Jan 02, 2017
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