I have 3 Ford AWD vehicles with “lifetime” lube PTUs. Each one I changed lube around 30k miles and 2 vehicles over 90k miles both blew up their PTUs. I am doing lube change a 3rd vehicle’s PTU today at 32k miles on unit for what good it will do me. Parts can be “Run to Failure”, “Periodic Maintenance can be done to extend time between Failures” or Ford uses the “If you run it then it will fail” approach to vehicle parts and components. At $3k per PTU replacement I am not amused with Ford’s PTUs. My next Ford will be a Bronco, pre 1986 without computers and where drain and fill plugs were designed in and not an after thought.
Rare