PTU fluid replacement interval?

[SM105K]

Nope, the fill hole on the 13+ PP has a temp sensor in it with a shield and it's buried behind the down pipe. The Drain plug on the other hand is easy to access. I might be the acid test, but I figured after you drain the PTU, it might be a simple option to just fill a suction gun with 18oz, or whatever you recovered as long as you don't have any leaks and trust the initial fill was correct, and inject it back in through the drain hole. Some have stated that they fill through the vent tube, but in my mind it's kind of counter productive since it's trying to fill and vent through the same hole at the same time. If you force feed it through the drain hole with a suction gun, air vents through the vent tube naturally. Just pop the fill tube out and stick your finger over the hole after all the new fluid's injected and quickly install the plug with minimal loss. That's the idea in theory....I'll have to post how it works out.

As for the RDU, Ford has an extra exhaust hanger (probably for the N.A. engine exhaust) right behind the RDU plug that interferes with access a bit. If you have a sawzall, do yourself a favor and cut that sucker off flush to buy a bit more room for servicing. It's no more than extra clutter.

I refilled my PTU through the vent it was really easy. I have a 13 PP.

I detailed all about it here.

https://www.ecoboostperformanceforum.com/index.php/topic,9259.0.html

 

[geophb]

Nope, the fill hole on the 13+ PP has a temp sensor in it with a shield and it's buried behind the down pipe. The Drain plug on the other hand is easy to access. I might be the acid test, but I figured after you drain the PTU, it might be a simple option to just fill a suction gun with 18oz, or whatever you recovered as long as you don't have any leaks and trust the initial fill was correct, and inject it back in through the drain hole. Some have stated that they fill through the vent tube, but in my mind it's kind of counter productive since it's trying to fill and vent through the same hole at the same time. If you force feed it through the drain hole with a suction gun, air vents through the vent tube naturally. Just pop the fill tube out and stick your finger over the hole after all the new fluid's injected and quickly install the plug with minimal loss. That's the idea in theory....I'll have to post how it works out.

As for the RDU, Ford has an extra exhaust hanger (probably for the N.A. engine exhaust) right behind the RDU plug that interferes with access a bit. If you have a sawzall, do yourself a favor and cut that sucker off flush to buy a bit more room for servicing. It's no more than extra clutter.

Seriously?? So ford put in a drain plug then decided to make it impossible to fill?? wow genius! :sarcasm:
I guess I assumed the fill lug was the same as my 2010, which is similar to a standard transfer case on a 4x4.

 

[SHOdded]

Not impossible, but yeah removing the downpipe is the factory way to get at the drain plug.