11-01-2021, 08:29 AM | #23 |
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You may be on to something. One thought I had was feeding a wire coat hanger into the plastic flexible tubing. Then form a candy cane shape before inserting into the fill hole. That would help to add and maintain the hook shape and would not impede the flow of oil during the extraction.
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11-01-2021, 08:29 AM | #24 |
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I've got some pic inside the TC, hope this helps. https://f15.bimmerpost.com/forums/sh...&postcount=161 You would have to find a way to snake the pipe back away from the fill plug towards the other side. |
11-01-2021, 08:34 AM | #25 | |
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Performance Tool W54173 200cc Extraction & Fill Pump |
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11-19-2021, 01:25 PM | #26 |
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Ordered new cabin air filters, front and rear diff fluid w/ new drain/fill bolts, and Transfer case fluid from FCP Auto. It just arrived and I realized I'm an idiot and didn't order a new replacement drain/fill plug for the transfer case. Is it a huge deal to reuse the stock plug? I hate to postpone my service another week while I wait for the new plug, but will if necessary. What you guys think?
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11-20-2021, 02:44 PM | #27 |
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I don’t think it will hurt. You *might* get some weep, but if you order the fill plug and then swap out later, I’m not sure I’d worry. The plug can be swapped pretty quickly if you have correct tool.
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11-20-2021, 08:31 PM | #28 | |
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BTW, don't forget. If you are dropping the reinforcement plate for the front diff. That plate needs new bolts. |
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11-21-2021, 05:55 PM | #29 | |
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11-22-2021, 07:01 PM | #30 |
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The Front diff seems to be the hardest to get to and diagnose leaks. I would say put new plugs in that. If the TC is leaking that would be inline with the center of the front doors.
Please let me know how you manage to do the Front Diff without dropping the reinforcement place. All guides and people doing it, seem to have done it. I am yet to attempt it as I haven't bothered to buy the bolts for it. |
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11-22-2021, 10:52 PM | #31 | |
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11-23-2021, 01:44 AM | #32 |
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The TC is directly behind the gearbox somewhere near the middle of the front doors. It can be done without loosening/removing the crossmember if you have short sockets/allen keys, or Tite-Reach extension(or the Strap-On version), or do some custom tooling and cut some sockets (me).
Tite-reach https://tite-reach.com/products/3-8-...tension-wrench My TC Post (just FYI, this thread has talks on oil types. Most do not correlate to a F15/F16) https://f15.bimmerpost.com/forums/sh...2#post28214462 The front reinforcement plat is the silver plat that is under the engine sump. The thing you poke your hand through the get oil filter. Has a nice view of it missing and the guy pointing at the front diff, in 5th pic https://f15.bimmerpost.com/forums/sh....php?t=1874581 33306772888 https://www.realoem.com/bmw/enUS/sho...diagId=31_1173 |
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11-23-2021, 01:26 PM | #33 | |
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11-23-2021, 05:19 PM | #34 |
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Yep, your front diff will have a drain and a fill plug.
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11-24-2021, 08:09 PM | #35 | |||
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Suction Tube Suggestion
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In case it helps anyone, I discovered that the ubiquitous plastic tubing that comes with syphon pumps/syringes can be permanently bent by very carefully using a lighter to "reform" the material downward. Keep the heat on it from about 3" until you reach the desired angle. If it stays heated too long it will eventually bend enough to close off the tube so be careful. HomeDepot also sells clear vinyl tubing which can be custom cut and formed for various jobs without ruining the tubes included with pumps. This is how I made my "transfer case oil tool". Theoretically a heat gun would also work. |
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11-24-2021, 08:31 PM | #36 |
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Have had this fluid in my F15 for about a year with no clutch wear according to the ISTA+ calibration procedure (offset angles remained the same).
That said, it's clear from a UOA that the BMW transfer case fluid (TF-0870) is very different than MT-LV. The Redline fluid will undoubtedly reduce metal component wear compared to OEM fluid, but it is also possible the high anti-wear additive content could interfere with proper clutch operation or cause glazing (permanent damage). Motul lists their DCTF as compatible- which in theory is closer to the transfer case in design than the manual transmissions Redline MT-LV was designed for. Ravenol also makes a true synthetic TF-0870 specifically for transfer case use. In my next drain and fill I've decided to go with the Ravenol fluid due to the above concerns about clutch compatibility. |
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12-06-2021, 11:26 AM | #37 | |
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Last edited by JamesInSJ; 12-06-2021 at 11:51 AM.. |
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12-06-2021, 03:58 PM | #38 | |
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12-08-2021, 04:12 PM | #40 |
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12-08-2021, 04:32 PM | #41 | |
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12-08-2021, 07:22 PM | #42 |
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I thought a full 90 def after was a little much. Appreciate the reply.
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12-09-2021, 02:03 PM | #43 |
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I do the same thing with the reinforcement plate bolts on my E53. Had it on and off at least 10 times now. Will take the same approach to the F15 when I do the front/rear diff fluids.
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