Hello! I just acquired my first Mercedes; a 1992 300E with 93,000 miles on the clock. My question is: What is the recommended oil viscosity for this engine? The previous owner has been using Mobil 1 synthetic 10w-30 weight. I have noted some oil consumption, perhaps a quart every 1,000 miles. The cylinder head was reworked with new valve stem seals at mileage 79,000. Also, on cold start-up there is some chain rattle for a few seconds; should this be addressed?

Otherwise, the car runs and drives very well.

Thanks for any advice.

Nick

 

Hey Nick, I have a 89 300 SE and depending on your climate you may want to go to a heavier weight oil. Mine has always been to the MB dealerships for all service and they put 20w50 Mobil 1 in it from day one. I have 175,000 and no oil consumption.

 

Thanks for the feedback, Buck. I live in Seattle, Washington. The winter temperatures rarely fall below 32F, and the summer temperatures rarely rise above 80F.

Thanks for any additional advice.

Nick

 

we run 20x50 in them ... you might need valve seals or guides