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BMW 3-Series (E90 E92) Forum
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Liqui molly ATF service kit ? E92 n55
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09-22-2020, 01:57 AM | #1 |
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Liqui moly ATF for 2012 335i ?
Hello, I'm reaching 42,000 miles and I've been looking around debating whether I should change my transmission fluid . I drive a 2012 335i coupe. I know it's recommended to just use oem fluid (lifeguard), but does anyone have any experience with liqui molly fluid ? I'd be glad to hear your opinion!
Also any other recommendations or anything better I should use or know ? A few people say that I shouldn't change the fluid as it would cause problems? Is this true? Also while at it, any word on changing the differential fluid and it's intervals ? Much Thanks https://www.fcpeuro.com/products/bmw...24152333907kt1 |
09-25-2020, 04:20 PM | #3 |
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I generally trust Liqui Moly and have had good experience with other products of theirs — generally I feel like FCP Euro only sells products they stand behind so I think that's a good bar.
BMW says 100K intervals for transmission fluid/filter, but ZF recommends 50K intervals. (See: FCP Euro blog.) If it were my car and I was looking at 42K on the odometer I'd probably wait a bit. That said, my own car is due, and I'll be going with this same kit. |
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09-25-2020, 04:22 PM | #4 | ||
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09-29-2020, 04:40 PM | #5 |
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Don't let the people fool you, The fluid change won't cause any issues specially in the mile range you are now. In fact you should do the fluid change to avoid future problems I did mine at 60,000 miles and the transmission was already having some little issues that were corrected after the fluid change.
Just remeber to change the fluid filter (If ZF it means the pan) and the bolts, the fill according the procedure with the temperature ranges and you'll be fine. In my case I used Febi which was the best i could find in my local market. 20K miles later the transmission is runing smooth as new. |
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09-30-2020, 07:02 AM | #6 |
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For the ZF transmission, as with any other part, I used FCP for the pan/filter and MERCON SP for the fluid that I got at my local auto parts store. You'll find tons of discussions on what to use, though. MERCON SP is used in Ford ZF transmissions and is essentially the same as Lifeguard 6/BMW fluid, but red. No issues at all for me in the changes I have done and easy to acquire locally.
That being said, for something that requires changing every 50k miles, getting Lifeguard isn't that big of a cost difference, relatively speaking. https://5series.net/forums/e60-discu...con-sp-141875/ |
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10-01-2020, 02:44 PM | #7 |
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ZF actually recommends every 60-75k. For such long interval ZF fluid is not that expensive. ZF is excellent fluid based on Borate Esters not mineral base. Most BMW owners that do regular transmissions fluid refresh us ZF, Redline D6 or Valvoline Maxlife. When I had X5 with ZF, I used ZF. Make sure you change filter/pan.
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10-02-2020, 09:13 PM | #8 | ||
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My local carX is going a deal for 150$ but they'll be using valvoline max life while just the kit from fcp euro is more expensive. Should I just go with valvoline ? I really want the best of the best for my car , I still plan on owning it the next 3 years . |
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10-06-2020, 12:56 AM | #9 | |
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Liqui molly ATF service kit ? E92 n55
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A new filter pan & bolts plus 7 quarts of MERCON SP would run you about $130. Some people run maxlife with no problems, I prefer to stay as close to OE spec as possible and given the price difference being negligible, I'd go with the spec fluids for ZF transmissions personally. |
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10-06-2020, 12:59 AM | #10 | ||||
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I would do the same but my issue is that I will be taking it to a shop and nowadays most shops use a flush machine that already has the fluid inside. Also you might be right I need to check about the pan , I was wondering about that as well. |
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10-06-2020, 01:12 AM | #11 |
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I thought you were DIYing it based on your original post. I hadn't heard of car-x before... just looked them up. I would never have this kind of work done there. The fluid change procedure from TIS is rather specific. If you can't do the work yourself, you'd be much better off using an independent BMW repair shop. I'm assuming they aren't changing the pan, just flushing and filling it and given the need to change the fluid at specific temps, etc., they would likely be doing it improperly.
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