PeachParts Mercedes-Benz Forum - View Single Post

layback40 · #12 02-04-2011, 06:49 PM

Quote:

Originally Posted by PastorJoe

Thanks for the responses. I apologize for bothering you as I should have done some research on my own. I was kind of looking for personal experience with modern oils as opposed to information that was written almost 30 years ago.

I will read the instructions next time as opposed to bothering you fine folks with a dumb question.

Joe,
There is no such thing as a dumb question.

Modern oils are still graded the same as they were 30 years ago for viscosity.
While we have advanced a little from the specifications of many years ago, moving from CC to CJ or better, each change tends to be just an additional requirement, not a new specification. It is a myth that in moving to a "more modern oil" one should change the viscosity of the oil. The viscosity requirement is part of the design requirements of the lubrication system as well as component design such as bearings. Small changes are unlikely to have a catastrophic effect as lube system design is normally substantial over design.
My posting the page was to make sure that people know what MB required. It definitely was not aimed at you! Unfortunately many never read instruction books. Just watch kids opening presents. I am sure you are not a kid though!! The last thing they look at is the instructions. They normally get thrown out with the wrapping.