So heavy diesel oils like Rotella and Delo etc are safe for M104 engines? I had always thought that it could overwork the oil pump etc. Kindof wondering if that might slow down my leaking rear radial seal. NOT looking forward to pulling the transmission for that.

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"Well, once again, we find that clowns and anarchy don't mix..." - The Tick
'94 E320 ~ Wikel
'87 300SDL ~ Frieda
'87 190E ~ Thurmond III
'84 944 ~ Schrickelgruber
'86 535i ~ Joerg