1998 ML320, 107K mi. I noticed a small leak under the rear diff a while back. A closer inspection today revealed a leak out the driveshaft seal that's getting quite serious. I would not hesitate to do this repair on other vehicles I've owned in the past, but the ML is the first car I've owned without a proper shop manual. Anything unusual about this job on this car? Any special tools? Is this a common problem?

Will Mobil 1 or Red Line 75W90 gear lube work OK? Manual calls for 85W90; I assume that's dino oil? I plan on 300,000 miles minimum on this car, would prefer to use synthetic lubes. I really need to fix this before my wife drives to Texas next week (1,200 miles each way).

Thanks for your input.

Lenny

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Lenny

There are only three sports: bullfighting, motor racing and mountaineering; all the rest are merely games. --Ernest Hemingway

'10 GL550/'04 BMW 545/'99 BMW 323/'98 ML320/'87 VW GTI (race)