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  #25  
Old 02-07-2016, 09:08 AM
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Re: Transmission Fluid Replacement at 50k.

We have a saying in Beemerland..

The cheapest thing on a BMW is the owner

So, while your vehicle is UNDER WARRANTY do not screw around with anything other than OE approved parts/fluids and, if you do your own maintenance, keep proof and receipts wherever possible.

I have actual experience with warranty issues (not Jeep!) and heartily recommend NOT screwing around with anything other than original parts and fluids. Even after your warranty ends, you can sometimes get manufacturers assistance in the event of a breakage/failure. Which is why I always use approved parts and fluids. It may cost extra but it is definitely insurance in the even of an issue.

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  #26  
Old 02-07-2016, 10:47 AM
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Re: Transmission Fluid Replacement at 50k.

Transmissions are too expensive to try alternative fluids when ZF transmissions are specifically designed for their fluid. As I posted earlier there is no alternative fluid for this 8 spd transmission. I did research on the most common 6 spd ZF transmission including oil analysis and discovered an alternative fluid that was also ZF approved.
My point to the original poster is that you are much better off paying for the correct fluid than experimenting on alternative fluids which


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Old 02-07-2016, 11:00 AM
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Re: Transmission Fluid Replacement at 50k.

My post was sent before I was done. To continue I am not pooh-poohing someone that wants to try alternatives to Life Guard. However a transmission fluid company that states their fluid is compatible never shows data to back those claims and if the transmission fails do you think they will pay for your transmission?
If you press ahead knowing that failure is possible and accept it is your responsibility if it does then more power to you.
However to post that you used a certain ATF and had no problems so far leads others to believe that you can use something cheaper than LG which is expensive.
It might be OK might not but until you run 50K miles and no issues it is still experimenting.
Who on this forum wants to spend what 4500 large to pay for a transmission?
FWIW on the ZF 6 spd Mercon SP is totally compatible with LG6. Mercon SP is 6 bucks a quart while LG6 is about 17 bucks a L.
If someone discovers an alternative backed by fact including oil analysis of both fluids then we all owe that person gratitude for helping us all discover suitable substitutes.
This forum is to help each other as we discover and learn about our ride...


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  #28  
Old 02-07-2016, 11:26 AM
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Re: Transmission Fluid Replacement at 50k.

Quote:
Originally Posted by fun2drive View Post
Transmissions are too expensive to try alternative fluids when ZF transmissions are specifically designed for their fluid. As I posted earlier there is no alternative fluid for this 8 spd transmission. I did research on the most common 6 spd ZF transmission including oil analysis and discovered an alternative fluid that was also ZF approved.
My point to the original poster is that you are much better off paying for the correct fluid than experimenting on alternative fluids which


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I do agree with that I'm not a big fan of fit all trans fluids, I have seen first hand on a friends transmission that was ruined with fit all fluid. I get trying to find alternatives when the dealer wants $45 a quart for the repackaged LG 8 which is rediculous when buying 9 quarts of it. But now that the LG 8 can be had for $17 a quart the savings is not that grand or worth it on a fit all at $12 a quart.

Anyway you have a good deal of experience with these zf 8spd trans. What is your recommendation on an adequate driveway fluid level check/fill procedure? The service manual recommends an extensive fluid level check procedure that is not driveway friendly at all, involving jacking the 4 car wheels and and spinning the wheels through geras ect. What is an acceptably diveway fluid level check procedure on the 8HP70?

Was just looking at the 2016 ZF data sheets on the ZF 8HP70 and for normal driving they are saying maintenance free and for severe service they are recommending a fluid change at 50,000-75,000 miles. I have a ways to go before reaching the severe service change numbers but still would like to understand an acceptable driveway fluid level check/fill procedure. I have dropped many trans pans just never any ZF so these ones are a little new to me. thanks for any info
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