I would suggest experimenting with this oil before trying it in the engine. First, mix the stuff 50-50 with D2 in a clear container. Are the two fluids miscible (do they mix together and stay mixed)? Let the mixture sit for a day. Does it stay mixed or does it settle out into layers?

If the mixture behaves, then try the 50-50 mix in a container connected directly to the fuel pump (like doing a diesel purge). If the engine seems happy then move on to putting it in the fuel tank. As always, keep an eye on the fuel filters.

Jeremy

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"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970

Excellent idea. I'll try it in the next few days and report back with my findings.

Thanks to all who replied,

Bryan

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1984 240D Euro 5 Speed 201,000 miles
1984 300D Euro 4 Speed (runs great but ugly)
1984 300TD 185,000 miles
1985 300TD, 240,000 miles
1972 220D, 240,000 miles w/ a stuck odometer
1984 300D, 214,000 miles
1984 300TD, 255,000 miles rustbucket parts car