How does the ATF II freeze -10°C?

Hi engpel,
If only one customer has the gelling difficulty and other customers are all OK with the same product then it appears the customer with the gelling difficulty ATF may have been contaminated with another product or even if there is only one customer you may have to test, an FTIR scan on the new ATF and the Used Gelling ATF should indicate what type of product has contaminated the fluid, I'm not sure if the fluid was damaged whether that would change the pour point but if the ATF was damaged you should be able to smell the burnt fluid and note a darker colour when checking the used fluid.
Regards
Rob S

Thanks Rob S..
It is interesting thing that the ATF get gelling before the using (while waiting at the storage) I don't understand..I can not interprete this event.. There is no way the contamination, isn't?

sorry for the late reply,
if the new unused fluid is gelling the fluid may not be made correctly with the lower temp squeezing an additive out of solution, can't think of anything else that could do that, Rob S

agree with rttech,
(assuming that it was filled with the proper ATF)
- The PPD additive may not working properly.

check the following properties:
- Pour point (to ensure)
- FTIR
- and AAS

for both, the fresh and the filled one.

regards, Nurudin