Developed an oil leak on somewhere on the injection pump about 7K miles ago ... was wondering about it and asked Marshall Booth.

As usual, he had great knowledge base and discussed leaking gaskets that could occur, especially with synthetics, but also noted that Mobil 1 has seal swelling additive.

It occurred to me then, that I had changed to Rotella Synthetic at about the same time the leak(s) started ...

Anyone else have this experience with Rotella Syn?

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George Stephenson
1991 350 SDL (200K and she ain't bent, yet)
former 2002 E320 4Matic Wagon - good car
former 1985 300 CD - great car
former 1981 300 TD - good car
former 1972 280 SEL - not so good car
a couple of those diesel Rabbits ...40-45 mpg