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Old 12-29-2019, 02:57 AM
80stech 80stech is offline
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Join Date: Mar 2016
Location: Saskatchewan Canada
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If there was a noticeable groove on the crankshaft that's not good. No it won't wear in. I actually need to do mine and haven't seen one of these yet up close but I was hoping it might be a teflon seal but I am starting to doubt that. The answer to the worn crankshaft would be either a sleeve or place the seal into the carrier slightly deeper or shallower to avoid the groove. Easier said than done though because the seal still needs to be perfectly perpendicular, although sometimes if your lucky and this is a known issue the replacement seal is designed to ride in a different spot when installed flush.

Also I think there is sensor or something on the left side of the block that can look like a rear main leak so maybe check that.
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1988 325is (purchased new) sold
2004 X5 3.0 2005 X3 2.5
2008 X5 3.0 (new to me)

Last edited by 80stech; 12-29-2019 at 03:02 AM.
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