What is the general consensus of the proper oil for the OM615 injector pump?
I've searched around and haven't specifically found any answers since a lot of folks are using a lot of different oils on cars across the spectrum of condition from new IPs to worn out IPs

I've seen folks using multigrade dinosaur, multigrade synthetic, monograde dino and monograde synthetic.

Add to that, does it need to be specifically diesel rated oil or can standard oil for a gasser be used?

Yesterday I sucked out a few ounces of what seemed like straight diesel and added gasser 30wt up to the overflow bolt hole till it dripped out.

So, can I keep using gasser oil? Should I replace it with diesel rated oil? Monograde or multigrade?

Thanks all,
Phil Forrest

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1972 220D "Trudy," named by a friend.

"The 220D sounds good... I suspect it is the only car that you need a calendar for, rather than a stopwatch, when doing acceleration tests."
Tom Abrahamsson