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  #1  
Old 10-11-2006, 03:35 PM
david s poole
 
Join Date: Mar 2005
Location: dallas
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it's been my experience that synthetic oil is thinner than mineral so that might account for your tapping noise.easy to find out switch back to 20/50 and see .cheap test.
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1987 Mercedes Benz 420SEL
1988 Mercedes Benz 300TE (With new evaporator)
2000 Mercedes Benz C280
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  #2  
Old 10-11-2006, 09:51 PM
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My friends mechanic, who does all the oil changes on his two benz's. He used mobil 1 synthetic.
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  #3  
Old 10-11-2006, 09:53 PM
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Quote:
Originally Posted by david s poole View Post
it's been my experience that synthetic oil is thinner than mineral so that might account for your tapping noise.easy to find out switch back to 20/50 and see .cheap test.

Yeah, i know the oil guides go out, but it literally happened like a few hours after the oil was changed. Do you by chance know what the sound is like when the oil guides go out? Is it a constant tick or one that comes and goes, and gets faster with accelleration.
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  #4  
Old 10-11-2006, 10:25 PM
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also what kind of oil should i use?? 20/50 Mobil non-synthetic??
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  #5  
Old 10-11-2006, 10:36 PM
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yal yal is offline
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Join Date: Oct 1999
Location: New York, Long Island
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Quote:
Originally Posted by lukesmith55 View Post
also what kind of oil should i use?? 20/50 Mobil non-synthetic??
Try 15W50 or 0W40 mobil 1.

What grade did he put in? You haven't answered this question.
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  #6  
Old 10-11-2006, 10:47 PM
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I have no idea what grade, all i know is it is mercedes reccommended mobil 1 synthetic
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  #7  
Old 10-11-2006, 11:02 PM
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Location: New England
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MBz recommends a Mobil 1 product that meets 229.5 (or 229.51 as needed).
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  #8  
Old 10-12-2006, 10:18 AM
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Join Date: Oct 2004
Location: Baton Rouge La
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my son's 300e....1989 was tapping with 20w-50....dino.

i switched to synthetic...15w-40 and its fine... i am going to thin it down to 10w-30 for the three winter months... and see what happens...
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