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11-13-2014, 04:25 PM | #507 |
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To be honest there are so many BMW forums i browse most but found this one to be most informative!
Picked my M3 up a few weeks ago have a few questions so thought i should join thanks for the welcome... |
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11-25-2014, 06:23 PM | #508 |
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Here's a new report just received on a 07 M5:
That has to be a new record on lead readings.
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11-25-2014, 07:38 PM | #509 |
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I'm sure it's just a particle streak
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12-02-2014, 02:37 PM | #510 |
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Another report, 09 M3 @ 57K:
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12-02-2014, 08:37 PM | #512 |
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Ok, I'm sure this is going to sound stupid but I'm looking to get educated here on the oil weight. Why the heck are we using something so heavy on these motors?? I'm not even close to being an expert about all of this but it seems like the oil is too thick for this motor. Would this engine benefit more from a lighter weight? 10W50 perhaps? Maybe a little less than that? I'm thinking out loud on my keyboard here so I'm sure I'm missing something. I'm sure one of you guys can school me on this though.
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12-03-2014, 09:17 AM | #514 | |
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12-03-2014, 10:59 AM | #515 |
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I have read many things about this but there doesn't seem to be a conclusion of what's really causing the problem. Is it the bearings or is it something else causing the bearings to break down like this? Could it be the oil, could it be the return ports for the oil are too small? I've heard that other manufacturers have made the return ports smaller than they used to and perhaps this is the case here as well? But with this engine you are reving much higher. I really don't know, I'm just wondering if anyone else has some real thoughts about whats truely going on here. I'm an electronics tech for my profession and typically when something fails it was caused by something else, not the part that blew up. Cause and effect, they don't usually happen in the same spot. Just my thoughts.
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12-03-2014, 12:57 PM | #516 | |
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12-03-2014, 02:14 PM | #517 | |
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Check out war and peace, aka this thread: http://www.m3post.com/forums/showthr...892838&page=70
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12-03-2014, 03:08 PM | #518 | |
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Not just the bearings that's the issue, or the oil. All facts in this post with no hearsay/gossip.
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12-03-2014, 03:21 PM | #519 | ||
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Quote:
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12-03-2014, 06:06 PM | #520 |
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WOW! Ok thank you guys very much! This tells me A LOT! Would it be in my best interest to contact my dealer and discuss this situation? My car is still under warranty so I wonder if they could determine bearing breakdown and REPLACE the bearings. Obviously put a larger size in. Or am I nuts to try and talk to them about this??
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12-03-2014, 06:41 PM | #521 | |
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Short of your engine blowing up, they won't do anything under warranty.
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12-03-2014, 06:45 PM | #522 |
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Has there been any capture of the DME's freeze frame data on cars where bearings have been removed and they are worn? It would be interesting to compare the overall mile to max RPMs/redline counts over the fleet.
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12-03-2014, 06:55 PM | #523 |
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Have them give u a free extended warranty
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12-03-2014, 07:19 PM | #525 |
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12-03-2014, 08:19 PM | #526 |
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I guess it's worth a shot, worse thing they could say is no but I can't imagine that they would brush off a legitimate concern. My car only has 23,600 miles on it but I bought it used and have ZERO idea of how is was treated by the previous owner. The dealer went through it and said it was rock solid. But reading all this info about the bearings does have me a little nervous, I must confess. It seems like a luck of the draw when and where these things will go on you. Thanks for all of the information guys, greatly appreciated!
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12-03-2014, 08:37 PM | #527 | |
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Audi 4.2 and Porsche Mezger engines don't seem to have any problems breaking well past 100k. |
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