w102acd Posted January 17 Report Share Posted January 17 All, I'm looking to service the rest of my drivetrain on my 2019 Edge ST. I did service the transmission several months ago so good to go there. It looks like the PTU needs to be sucked out of the fill and replaced with 12.7oz of 75W-85. It looks like the RDU has a drain and fill plug and replaced with 28.1oz of W75. Dumb question: Does this vehicle have a transfer case? I can't seem to find any details on it if it does. I have a 2020 Explorer that does have a transfer case that I'm going to swap the fluid on. Thanks! Quote Link to comment Share on other sites More sharing options...
fishx65 Posted January 17 Report Share Posted January 17 No transfer case, the PTU handles these duties in all wheel drive vehicles. 1 Quote Link to comment Share on other sites More sharing options...
w102acd Posted 1 hour ago Author Report Share Posted 1 hour ago I'm concerned about the PTU since I have no idea when it was serviced last and it doesn't seem like sucking it out and topping it off is really a full fluid change. Any thoughts or recommendations to get the most new fluid in the PTU? Maybe suck it out, fill it up several times with some driving between (like a week)? It only holds 0.4 quarts per the manual so not a bunch of fluid to buy. Quote Link to comment Share on other sites More sharing options...
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