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Transmission Fluid- Change or no change
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07-01-2022, 03:46 PM | #1 |
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Transmission Fluid- Change or no change
Hello,
I am wondering if changing my transmission fluid is a good idea. As I heard that the oil is good for life. I have a 2009 Bmw 335xi coupe 6 cylinder with 123000 miles. Any helpful advice would be great. Also if i change are there other oil products that are better than Genuine BMW like Liqui Moly or Pentosin. Thank you |
07-05-2022, 12:08 AM | #3 |
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Absolutely change it. Use ONLY zf lifeguard 6 or mercon SP. Do not use redline, liquimoly, valvoline, etc. Trust me.
Mercon Sp and Lifeguard 6 are the same formulation but made by different branches of Shell. It will NOT shift right with anything else regardless of what it says on the bottle. |
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07-05-2022, 02:06 AM | #4 | |
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07-05-2022, 12:50 PM | #5 |
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07-05-2022, 02:48 PM | #6 |
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07-05-2022, 06:51 PM | #7 |
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I would say most DIYers use Valvoline maxlife in their GM trans. I've used normal D6 before, but maxlife seems to shift a little smoother. I've also seen people use maxlife in their ZF trans as well, but I continue to use MERCON SP.
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07-05-2022, 11:16 PM | #8 | |
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07-07-2022, 08:46 AM | #9 |
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I've done two changes now on my GM 6L45 with Valvoline MaxLife ATF and the filter kit from FCP. Shifts well so far, and definitely better than when I first bought the car.
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07-09-2022, 10:27 PM | #10 | |
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07-10-2022, 11:20 AM | #11 |
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Im no BMW technician, but this sounds like terrible advice.
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07-11-2022, 08:16 AM | #12 | ||
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07-12-2022, 02:51 PM | #13 |
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So FCP Euro has a service kit link Below:
(https://www.fcpeuro.com/products/bmw...24152333907kt3) Should i change the megatronic sleeves as well since i am in the transmission or is that not necessary? |
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07-13-2022, 09:20 AM | #14 | |
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If I can offer one tip, be VERY careful torquing the bolts that hold the mechatronic to the bottom of the transmission. They require a very small torque spec, and can strip quite easily. That happened to me, which resulted in a tow to the dealer to remove the stripped bolts and finish the job. |
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07-13-2022, 01:49 PM | #16 |
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Just curious, has anyone used a 6L45 from one of the Cadillac models and put it into their 328i? Is anyone aware of any differences?
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09-03-2022, 01:00 PM | #18 | |
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The whole thing behind lifetime fluid is so the car manufacturers can brag about their low maintenance cost over their predetermined lifespan of the car (say 100k for example). Lifetime fluid is good for the lifetime of the trans, which will definitely be a shorter life than if you change it, regardless of who makes the trans. |
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09-03-2022, 01:01 PM | #19 |
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11-05-2022, 12:46 AM | #20 |
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I had my fluid and filter replaced at 150k and the car has never shifted better.lifetime fluid just means the life of the factory warranty.2006 e92 n52 6at zf box.
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