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ATF UOA, Any point in it? #5232755 10/07/19 09:21 AM
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BMWTurboDzl Offline OP
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Due to the relatively low change frequency is there any point in obtaining a UOA for ATF? I was thinking about pulling a sample on my ZF unit (54k miles) for the forum but I'm not sure it's going to tell use anything useful.


“It took untold generations to get you where you are. A little gratitude might be in order. If you’re going to insist on bending the world to your way, you better have your reasons.”

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Re: ATF UOA, Any point in it? [Re: BMWTurboDzl] #5232783 10/07/19 10:06 AM
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demarpaint Offline
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Originally Posted by BMWTurboDzl
Due to the relatively low change frequency is there any point in obtaining a UOA for ATF? I was thinking about pulling a sample on my ZF unit (54k miles) for the forum but I'm not sure it's going to tell use anything useful.

Unless they have a lot of ZF transmission UOA data to compare it to I wonder what useful info you can get from it. Water intrusion from an external source maybe? Wear metals, compared to what? I'd be interested in hearing what the experts have to say.


God Bless Our Troops

Re: ATF UOA, Any point in it? [Re: BMWTurboDzl] #5232819 10/07/19 10:51 AM
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Originally Posted by BMWTurboDzl
Due to the relatively low change frequency is there any point in obtaining a UOA for ATF? I was thinking about pulling a sample on my ZF unit (54k miles) for the forum but I'm not sure it's going to tell use anything useful.


Its worth getting if you get TAN.


2015 Subaru Forester 2.5 engine/CVT
2015 Ford F250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)
Re: ATF UOA, Any point in it? [Re: Donald] #5232829 10/07/19 11:03 AM
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Originally Posted by Donald

Its worth getting if you get TAN.


I honestly don't think TBN and TAN change in ATF.... pretty much ever


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: ATF UOA, Any point in it? [Re: BMWTurboDzl] #5235969 10/10/19 01:53 PM
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Originally Posted by BMWTurboDzl
Due to the relatively low change frequency is there any point in obtaining a UOA for ATF? I was thinking about pulling a sample on my ZF unit (54k miles) for the forum but I'm not sure it's going to tell use anything useful.



If you are going to do trending it can be helpful, but you need to make sure the analysis includes particulate's (solids) analysis.

Last edited by MolaKule; 10/10/19 01:54 PM.

"You ... sadist," said Mr Cummings, "you try to make people think." Ezra Pound (1885-1972)
Re: ATF UOA, Any point in it? [Re: MolaKule] #5238345 10/13/19 09:03 AM
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BMWTurboDzl Offline OP
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Originally Posted by MolaKule
Originally Posted by BMWTurboDzl
Due to the relatively low change frequency is there any point in obtaining a UOA for ATF? I was thinking about pulling a sample on my ZF unit (54k miles) for the forum but I'm not sure it's going to tell use anything useful.



If you are going to do trending it can be helpful, but you need to make sure the analysis includes particulate's (solids) analysis.


No trending because I don't foresee myself owing this car at 200k miles (car would be over 15 yrs old). I'd probably perform another pan drop at 100-120k miles so that would be only 2 pan drops. Not enough data points for trending.



Last edited by BMWTurboDzl; 10/13/19 09:04 AM.

“It took untold generations to get you where you are. A little gratitude might be in order. If you’re going to insist on bending the world to your way, you better have your reasons.”

435i
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