07-18-2003, 08:54 PM
I recently purchased an '81 300D and it didn't come with an owners manual. I just wanted to know what type of oil I should use - just your run of the mill 10w-30 or 5w-30? Forgive me if this is a dumb question, I am totally new to diesel and she's in desperate need of an oil change, so I figured asking wouldn't hurt. Thanks in advance!
07-19-2003, 10:22 AM
The three most common conventional oils used for diesel engines seems to be Chevron Delo 400 15W-40, Shell Rotella T or Mobil Delvac 15W-40. Whatever oil you choose, be absolutely sure to change it every 3K. Oil is cheap.
07-24-2003, 09:35 AM
More information than you could possibly need is at:
I'm currently running the Mobil-1 15W50 in the Diesel and Mobil-1 0W40 in the E320.