Why aren't they dropping dead yet?True! however, doing a lot of towing and AWDing with your PTU underfilled is pretty much a death sentence to the PTU if it is finally brought from 48% filled to the 100% level at the 1st recommended PTU oil change interval. I hope Ford is listening to me. I can almost guarantee that premature PTU failures will start to happen here pretty soon for some.
For those people who read threads like this and can't sleep at night - buy the extended warranty.
I'm good with my factory one.
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