Rear Drive Oil Black? - BMW Luxury Touring Community
 
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post #1 of 4 Old Sep 11th, 2006, 4:12 pm Thread Starter
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Rear Drive Oil Black?

4,000 miles ago I installed a new rear drive bearing (17 ball bearing) and new seal along with the o-ring and 2 new bolts. I replaced it to make me feel good. I changed the oil (Mobil 1 75w-140) at 500, 1,500 and yesterday at 4,000 miles. All three times the oil has come out a light black in color. Has a little black slim around the drain plug, which is normal. No metal on the magnet.
WHY IS THE OIL COMING OUT LIGHT BLACK IN COLOR? Before I changed out the bearing the oil always came out looking like new.

Jim Campbell
Grand Forks, ND
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post #2 of 4 Old Sep 11th, 2006, 4:16 pm
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And it will again. I bet it's just purging grease around the new bearing.



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post #3 of 4 Old Sep 11th, 2006, 4:24 pm
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Better than gray
Gray=powdered metal
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post #4 of 4 Old Sep 12th, 2006, 8:13 pm Thread Starter
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The new bearing only had light oil on it no grease. I can't figure it out. The blackness may be coming from the new seal? What ever it is will it stop?

Jim Campbell
Grand Forks, ND
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