10-20-2017, 10:24 PM | #23 |
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Did a bunch of maintenance on my X5 today. She has 197,800 miles on her.
Here's a pic of my transfer case oil with 55k miles on it. It's dark and dirty, which usually doesn't mean much but, all the metallic particles in the oil and at the bottom of the drain pan tells me 55k is far too long of an interval. We drive roughly 90% highway and this is my wife's DD, which is driven pretty easy. After seeing this today, I'll be changing the transfer-case oil every 40k. Also changed the following fluids. Front diff- Had 97k on oil. Still looked/smelled clean. Rear Diff- Had 97k on oil. Still looked/ smelled clean. Transmission- Had 55k on fluid. Was dirty but didn't have a harsh smell. Hardly any metallic particular on the pan magnets, which I was pleased to see. I will do the differentials annually and the transmission and transfer case every 40k from now on. I used ista to reset the fluid monitors and settings in the transfer case and transmission. Last edited by 335dsleeper; 10-21-2017 at 09:04 AM.. |
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10-25-2017, 11:05 AM | #24 | |
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2011 BMX X5 Xdrive50i - 127K - No muffler, BMS Stage 1
2005 Jeep Grand Cherokee 5.7L V8-Her stock DD 1995 Ford Thunderbird 4.6 V8 LX - A bunch of mods BMW guys don't care about 1995 BMW 540i6 - H&R Lowering Springs, Bilstein's, Racing Dynamics Bars, Catback, Short shifter |
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10-25-2017, 11:08 AM | #25 |
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so I bought transfer case fluid from a BMW dealer here in Maryland, and the stuff in the bottle is closer to ATF then to 75w, and I double checked with the service manager and he confirmed its the right stuff. Am I missing something here?
Sorry to thread highjack I don't think changing transfer case fluid at 40k is excessive at all. I think with as weak as these are, 30k may be more in line with a good change
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2011 BMX X5 Xdrive50i - 127K - No muffler, BMS Stage 1
2005 Jeep Grand Cherokee 5.7L V8-Her stock DD 1995 Ford Thunderbird 4.6 V8 LX - A bunch of mods BMW guys don't care about 1995 BMW 540i6 - H&R Lowering Springs, Bilstein's, Racing Dynamics Bars, Catback, Short shifter |
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10-25-2017, 06:44 PM | #26 |
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10-26-2017, 09:38 AM | #27 |
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2011 BMX X5 Xdrive50i - 127K - No muffler, BMS Stage 1
2005 Jeep Grand Cherokee 5.7L V8-Her stock DD 1995 Ford Thunderbird 4.6 V8 LX - A bunch of mods BMW guys don't care about 1995 BMW 540i6 - H&R Lowering Springs, Bilstein's, Racing Dynamics Bars, Catback, Short shifter |
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10-26-2017, 03:20 PM | #29 | |
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I’m not familiar with the BMW fluid, if it has different additive packages for the transfer case or not. I don’t know enough about their divider oil or what could or should be substituted. The transfer case takes just under a liter, buying the BMW fluid is easy and worth the additional money in my opinion. I’ll save money doing the work myself. I’m not saying there isn’t better fluid out there, I just can’t justify the time researching when there’s an OEM solution.
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10-31-2017, 01:15 PM | #30 |
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I would say with changing it so much more often that it matters a little less if you use fancy expensive oil or BMW branded oil, long as they are specified for this application.
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11-02-2017, 06:16 AM | #31 | |
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11-02-2017, 08:54 AM | #32 | |
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My miles are similar to yours and when I had someone at BMW pull the records on the service done on my car. Those fluids were not replaced. I plan on doing mine soon and will probably go with BMW fluid if I can get my hands on it. FYI to all, before replacing the fluid quickly confirm with the sticker on the trans, diff and tc. The cost of putting in the wrong fluid is not worth the few seconds it takes to check the label. Last edited by philly42; 11-03-2017 at 09:55 PM.. |
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11-03-2017, 09:47 PM | #33 | |
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+1 Best practice and a good point for sure |
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