I have been using rotell t im my 1990 for as long a I rememeber, both sybthetic for winter and reg dino < yes I switch off with NO PROBS>

it is safe to say it has been used in my 1990 since about 1993 when it was the OLD sf/cc/cd or whatever

anyway I also use it in my 1992 since i purchaed it with 114k it now has
170k never burn a drop in either one.... seems like they find their own oil level i use 2 gals for each change althought the manual says 7.5 qts..

I love it and Yes I can get it at bj club or sams for dino at about 32 bux a case.. Dino synthetic about 18 i think maybe 14 cant remember.. I do see the mobil 1 5 qts there too but I am not required to use it since mine are older diesels..

had to put a timing chain in the 1992 right after i bought it but i will have no probs using rotella t for ever!!

www.shell.com has some interesting info on it..

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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