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Old 01-01-2002, 02:03 PM
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Mike Murrell Mike Murrell is offline
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Join Date: Feb 2000
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Mark:

There are people who regularly use 15W-40 in gas engines. The back of the container tells the story. Does Delo carry a "gas" rating? As of late, gas oils are rated SJ and more recently SL. Diesel oils have a rating that begins with the letter C.

It all comes down to what you want to use long term. Some believe that you should pick a brand of oil and stick with it. Different brands affect things like seals.

A local MB independent mechanic I know swears by 10W-40 for the 420/560 SELs and the M103 motors as well.

A veteran mechanic by the name of Randy Durrance(used to post here) once said "the best oil is clean oil".
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Mike Murrell
1991 300-SEL - Model 126
M103 - SOHC
"Fräulein"
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