Hi guys.
I have done a few fluid services on the Power Transfer Unit gearboxes found on the Frd Explorer, Edge and other related models that use the same PTU.
Every time, the fluid is black, pitch black. We know that previously, Ford only recommends a fluid service every 160k km (100k mi) only under severe conditions. But the models I work haven't been stressed as such.
Any idea why it is so black and thick under short lifespan and duty conditions?
I have done a few fluid services on the Power Transfer Unit gearboxes found on the Frd Explorer, Edge and other related models that use the same PTU.
Every time, the fluid is black, pitch black. We know that previously, Ford only recommends a fluid service every 160k km (100k mi) only under severe conditions. But the models I work haven't been stressed as such.
Any idea why it is so black and thick under short lifespan and duty conditions?