Amsoil ATF + stuff, 45RFE, Jeep Liberty, 21K

[Tempest]

The lab is OAI. There are actually 2 UOAs on the same fluid. The first is 7K on the oil (old formula ATF) with MT-10 added and after I had a trans cooler added. The second is after 21K on the oil and I added a hydraulic filter (which added 1 quart of new spec. ATF) and 6oz. of ARX. So there is whole lot going on here, sorry.

Total current capacity is ~17 quarts and the car has ~60k total miles of fairly easy in town and highway driving. The factory fill of ATF+4 was replaced @ ~38K on the car via a cooler line flush and pan drop, but I'm sure there is still some +4 in the system.

Iron: 16/28
Chromium: 0/0
Lead: 33/61
Copper : 48/83
Tin: 3/6
Aluminum: 4/5
Nickel: 0/0
Silver: 0/0
Silicon: 67/93
Boron: 45/64
Sodium: 11/10
Magnesium : 1/1
Calcium: 173/170
Barium: 0/0
Phos: 325/466
Zinc: 22/32
Moly: 1/0
Titanium: 0/0
Vanadium: 0/0
Pot: 0/0

Visc: 7.05/6.96 cSt @ 100C
Oxid: 8.0 /13.0
Nit: 1.0 /1.0
TAN: 1.79/1.23

The copper and lead have me a little worried, and silicon continues to rise despite the filter (ARX cleaning?). Not sure of the wide discrepancy on the boron and phos numbers either.

The oxidation went up, yet the TAN went down after the ARX. Terry has stated someplace that ox maybe the ARX cleaning and not the fluid actually degrading.

And lower TAN seems to support JAG's finding with his oil experiments.

So anyway, all comments welcome.

 

[benjamming]

At what mileage was the new ATF & filter added - immediately after the 7k UOA install?

Why no glycol test? Do the transmission lines not connect to a tank on the radiator where intermixing is possible?

TBN result?

What is used for a pan gasket?

 

[Tempest]

Quote:

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immediately after the 7k UOA install?

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No. Somewhere about in the middle of the second UOA range.

Quote:

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Why no glycol test?

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It appears that is not run on a trans ATF UOA by OAI (

). This fluid is run through the hydraulic filter, then the radiator, then the cooler, and then back to the trans.

No TBN included. Pan "gasket" is Chrysler Transmission Pan RTV.

 

[benjamming]

But you pay the same amount for an ATF UOA as an engine oil UOA, & they do an antifreeze test on the engine oil. Sorry, may not be relevant, but you never know. More data is better (especially when you pay for it). BTW, Blackstone is the same way.