Thread: ZF auto temps?

Hi,
I have a temp gauge on the same line but a little closer to the gearbox than the original.
I see normal temps of between 43c to 50c when cruising at highway speeds on flat roads. However when towing the Camper up steep hills and lock-up can't be achieved I can see temps of up to 110c.
I have a bigger P38 cooler now and prior to this I would see the trans warning light come on when towing up very steep hills, and that means 135c which is not good for the fluid and gearbox as I later found out!


I also see temps of around 70c when in heavy stop - start traffic. So I'd say your temps are pretty normal.


Cheers


Mark

stop panicing.

if you're using a decent DEX III your oil is good to about 160 degrees. and then it starts to exponentially degrade.

from memory the oil life remaining halves for every 10 degrees over you go and no, it doesnt regerneate.

so oil that might last 2 years will last 1 if you run it over 160

6 months if you run 170+

or a combination there of....

(IIRC the yearly figure is based on 8 operating hours per day, 5 days per week and 4 weeks per month so 1920, call it 2000 operating hours per year)