Just curious--could I use Shell Rotella T in my 1989 300SE with the M103 engine? I already use Rotella T in my 1979 diesel. Up to now, I've used Pennzoil in the gas car. Members' thoughts would be appreciated.

Joe Bauers

Mercedes never reccomended rotella for their diesels.now you want to use it in gas sure go ahead.

iim sure you could use it in your gas jobber .
its a good quality oil.

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1992 500E silver
1990 300ce AMG
1993 500e smoke silver-sold
1992 500e sold pearl black-sold
1966 mustang converible 289
1969 camaro x11
1991 ZR-1
1972 corvette roadster
2000 dodge cummins 4x4 sold
1994 e320 sold
1987 560sec Brabus
1987 300E (my first benz)

Read the info on the bottle. Oil containers have specs indicating their suitabilty. Spark combustion engines normally require an SJ or SH rating. These 2 are the most current. Your car could operate with an older rated oil, but none of todays quality oils have anything less that SH.

I happened to glance over the info on various "diesel" type oils awhile back and all were also suited for gas engine use as well. If you dig through the archives, you'll find more than one favorable mention of 15W-40 in gas engines.

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Mike Murrell
1991 300-SEL - Model 126
M103 - SOHC
"Fräulein"