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anhydrous7 · #5 09-22-2002, 04:36 PM

I serviced my 1982 300SD rear differential on Friday. Must be the right time of year or something. I used a 17mm allen wrench. It required moderate strength to remove the drain and fill, but I did not need a cheeter bar.

I suspect this was possibly the first time mine had been changed as well. I have 137K on the vehicle. The color was very brown, almost a chocolate syrup color. I did not see too much in the way of metal particles though. I was able to do this at my buddies shop and had it up on a rack. I was able to place my finger in the drain hole and pull out some more fluid that did not drain on its own. There was some metal particles found when I did this, but nothing to be concerned about.

I refilled with the car up in the air on the rack. I filled until the gear lube started to run out of the fill plug. I am now wondering about over filling as stated by psfred in his thread. I have bulk gear lube and did not measure how much I put in. I did use a filling device that resembles a grease gun. You basically fill the canister and then push the plunger in to force the gear lube into the differential. It took approximately two and 1/3 of these to fill to the drain plug. The volume is probably close to a little more than a quart.

Wondering if any one can comment or confirm the possiblilty of overfilling the differential if it is filled with the tires off of the ground as it relates to a 300SD.

Thanks,
Rob