Erratic Shifts on Turns

[ard]

Hey, good news is that you will get your ATF from 50% old, down to 25% old....

[ltemup4650]

All, I am very happy to report that I have resolved this issue.

As mentioned above, my next step was to order an actual ZF brand oil pan. I did just that, installed it, filled her up, and the issue is gone!

The filter neck and o-ring on the aftermarket pan I had bought was not manufactured correctly. Specifically, the neck and/or o-ring are slightly too small. This allowed a poor seal between the filter and valve body (which is the suction to the transmission’s fluid pump). When I would take turns, especially left turns, the fluid would naturally slosh to one side, uncovering the valve body and filter neck connection and allow air to enter the pump. Thus, there was a momentary loss of fluid/pressure.

I typically purchase aftermarket parts. There are several manufacturers that make high quality stuff (Valero, Bosch, Febi-Bilstein, etc). The particular brand I purchased this time was a mistake.

So, if you’re doing a fluid/filter change yourself, do NOT purchase a filter and pan from KM PREMIUM. The exact filter can be found here:
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

Should I create a separate “warning” post to steer people away from this particular brand/filter or is this post good enough?

[kuhllax24]

I wish you lived close to me to help me with my tranny-oil change.


Glad it worked out, enjoy the e70 humming like new.

[CLS70]

Originally Posted by ltemup4650

All, I am very happy to report that I have resolved this issue.

As mentioned above, my next step was to order an actual ZF brand oil pan. I did just that, installed it, filled her up, and the issue is gone!

The filter neck and o-ring on the aftermarket pan I had bought was not manufactured correctly. Specifically, the neck and/or o-ring are slightly too small. This allowed a poor seal between the filter and valve body (which is the suction to the transmission’s fluid pump). When I would take turns, especially left turns, the fluid would naturally slosh to one side, uncovering the valve body and filter neck connection and allow air to enter the pump. Thus, there was a momentary loss of fluid/pressure.

I typically purchase aftermarket parts. There are several manufacturers that make high quality stuff (Valero, Bosch, Febi-Bilstein, etc). The particular brand I purchased this time was a mistake.

So, if you’re doing a fluid/filter change yourself, do NOT purchase a filter and pan from KM PREMIUM. The exact filter can be found here:
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

Should I create a separate “warning” post to steer people away from this particular brand/filter or is this post good enough?

Thanks for the update ! glad you fixed it

[Purplefade]

Excellent! Glad to hear you got her sorted out


One thing I learned from this forum is that when it comes to the ZF tranny... go with original equipment, it's just too big of a gamble not too.


I did what you did, I picked up a filter and gasket kit that they happened to have in stock at my local NAPA Auto Parts store. Everything looked like it was on the up and up so to speak but the gasket wasn't the OEM material so when I torqued the pan it actually "crushed" the gasket and made it weep... so I to got the benefit of multiple fluid changes (unintentionally of course)

[ard]

Originally Posted by ltemup4650

All, I am very happy to report that I have resolved this issue.

As mentioned above, my next step was to order an actual ZF brand oil pan. I did just that, installed it, filled her up, and the issue is gone!

The filter neck and o-ring on the aftermarket pan I had bought was not manufactured correctly. Specifically, the neck and/or o-ring are slightly too small. This allowed a poor seal between the filter and valve body (which is the suction to the transmission’s fluid pump). When I would take turns, especially left turns, the fluid would naturally slosh to one side, uncovering the valve body and filter neck connection and allow air to enter the pump. Thus, there was a momentary loss of fluid/pressure.

I typically purchase aftermarket parts. There are several manufacturers that make high quality stuff (Valero, Bosch, Febi-Bilstein, etc). The particular brand I purchased this time was a mistake.

So, if you’re doing a fluid/filter change yourself, do NOT purchase a filter and pan from KM PREMIUM. The exact filter can be found here:
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

Should I create a separate “warning” post to steer people away from this particular brand/filter or is this post good enough?

I try and only use OEM parts (not OE, OEM is fine) for this reason. Not always though.

$27 for a pan is dirt cheap, for sure.

I wonder how many people have issue that might be unnoticeable, perhaps leading to longer term issues??

I think we all will be quick to cite/link your warning. Better than a stand alone THREAD on the issue, when the topic of AT pans comes up, a POST in the thread saying “warning, read this” will be more likely to be found by people researching....

Kudos to Purplefade for the call.

[ltemup4650]

Originally Posted by ard

I try and only use OEM parts (not OE, OEM is fine) for this reason. Not always though.

$27 for a pan is dirt cheap, for sure.

I wonder how many people have issue that might be unnoticeable, perhaps leading to longer term issues??

I think we all will be quick to cite/link your warning. Better than a stand alone THREAD on the issue, when the topic of AT pans comes up, a POST in the thread saying “warning, read this” will be more likely to be found by people researching....

Kudos to Purplefade for the call.

ARD, I appreciate everyone's comments, including Purplefade's. I will say, though, that Purplefade echoed my thoughts. See my post #8 which is efore Purplefade's

[B4_685]

Making me doubt my after market pan now hehe


2012 E70 N63 50i