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      08-10-2018, 08:15 AM   #23
EnVe46
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Having dealt with this isn't E46, I'm calling BS. Except I stripped the bolt head, not the pan. The likelihood of it already being stripped and not leaking, is very slim. I'd be civil with the dealer and challenge them. Then I'd make a call to BMW NA if all else fails. Best to speak professional, explain it wasn't leaking before and you'd like an explanation. Stripped oil pans will leak 99% of the time.
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      08-10-2018, 08:58 AM   #24
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It's entirely possible that the bolt was over-torqued by whoever installed it last. Over-torque will start to pull and break the threads but leave them "intact" enough to hold until disturbed next time (this gives aparticular feedback to the wrench turner at the time as it feels like it's slipping- an awful sensation). Once the next guy removes it and goes to tighten it, full torque can't be achieved before the threads pull all the way out and are "stripped".

Sad truth is that technicians rarely use torque wrenches. Unfortunately in a rushed, volume-driven dealership environment techs routinely omit extra steps in order to flag more hours and keep up with production expectations.
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      08-10-2018, 09:07 AM   #25
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Quote:
Originally Posted by pbonsalb View Post
The fault is hard to prove unless the oil was always changed at the same shop. If other shops changed the oil, one of them could be at fault. It could have been partially stripped but not leaking for years.

Find an independent shop who will time sert it on the car or if you were going to do rod bearings then pull the pan and time sert or weld it off the car and do rod bearings at the same time since there is significant labor overlap in pulling the pan and doing bearings.
And then the owner is left to pick up the bill since no one wants to take responsibility for their incompetence or hasty job.
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      08-10-2018, 09:25 AM   #26
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Yes unfortunately that is the likely result. I might argue briefly with the shop, but I would not pay a lawyer to sue when I would likely lose and end up spending as much on the lawyer as on the repair or replacement work.
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      08-10-2018, 10:01 PM   #27
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This is BS. the dealer did it.
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      08-11-2018, 09:01 AM   #28
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I'd have to agree. Sounds shady.

If your car drove in without leaks, then it's likely they stripped it somehow when they touched it.
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      08-14-2018, 09:00 AM   #29
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Maybe someone with machining experience can fix it. On my E39 M5, I had this same issue with oil leak coming from drain plug so I elected to remove the oil pan and sent it to a guy in Wyoming or Wisconsin, for his work to repair this. I am sure he drilled the hole much bigger to fit/press in a steel bushing so that it would not strip ever again by over tightening.

See post #22.

https://www.m5board.com/vbulletin/e3...-though-2.html

Last edited by DeafM5; 08-15-2018 at 09:56 AM.
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