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

I have been using rotella-t syn since it came out and i am quite impressed.. I use it in 2 of my 3 turbo diesels...
mine has 190k my wifes has 140k

my older 1992 has 201k and im still using mob 1 in her only becasue of what marshall suggested about the seal swelling additives...

but saying that i have to say that i have not had any probs with rotella syn... seems to control the sulfer better

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1994 S-350 6cyl Turbo Diesel 158k

1998 300d 6 cyl Turbo Diesel 143K

1993 2.5 124 Turbo-Diesel 236

1990 2.5 124 Turbo-Diesel 228k

1983 SL-500 EURO W/HEATED SEATS 40K

SOLD 1977 Jaguar XJ6 Coupe Antique Roadster 85K

SOLD 1993 2.6 6 cyl 190 E 150k

SOLD 1992 2.5 124 Turbo-Diesel 204k

RIP 1992 124 300 TD 265K OIL PUMP QUIT @ 85MPH