I was reading on a few threads and people were talking about Rotella which is an oil I am not familiar with at all. Then again I have never owned a diesel till now but I do plan on doing an oil change on it asap.

My question is who likes which oil and why? I've used Mobile 1 many of times in gasoline engines and I have loved it.

Now that Rotella has been mentioned who recommends it over mobile 1 and why?

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86 Mercedes 300SDL - 400k+ miles