So I just wanted to share with everyone about my experience with draining and filling the PTU on my 14 PP.
A little background... I am the second owner of my SHO. I purchased it back in '15 with under 17k on the odo. Whether or not the fluid was changed prior to my ownership is anyone's guess but I will side on the assumption of no. I have roughly 45k on the odo now and have never changed it so I was getting anxious. I drive about 50 miles round trip from work and they are all highway miles with speeds between 65-75. On occasion when driving around town I'll open her up. Just some background of my driving habits.
My first step was I went a grabbed some 1/4" ID fuel hose from autozone, 2 1/2' worth, as well as some 5/8"-1/4" hose clamps in case I didn't have any.
The thought of how much a pain it was to fill on the PP had me thinking and after reading a couple of posts it seems like people were trying it and never really reporting back. At least not what I saw. The method I am mentioning is to fill it through the PTU vent hose after extending it out to the brake booster to which mine is located. I was able to pull the OEM vent tube off and managed to snake my arm in a way to install the new hose but was not able to tighten the hose clamp but after thinking about it I didn't want to tighten it just yet.
So I couldn't find anything to protect the O2 sensor and I didn't want it getting all over the place so I took some aluminum foil and made a make shift cover for the 02 while also routing the oil where I want it to go. Once I got the drain plug off to my surprise the gear oil was runny and not thick and building up into gunk. Once all of the fluid was drained and stopped dropping I tested out pouring some fluid into the vent tube just to ensure that fluid was going into it and sure enough it was. I left the hose clamp on the hose loosened in the event that it wasn't going into the PTU and I could pull the hose and allow the oil to drain. I couldn't find a funnel small enough so I placed the bottle into the opening of the vent tube and just proceeded to squeeze. I squeezed the bottle about 4-5 times and then after waiting about 5 seconds I would see the bottle return back to shape as well as gurgling from the vent tube draining and then I would repeat the process. It took me about 15 minutes to get 16oz's in which is what was taken out.
My oil of choice this time around was Mobile 1 and will be switching out to redline on the next go around.
All in all it's a huge relief to have it done and to know that it wasn't gunked up like some other have reported and by far a lot easier than dropping the down pipes and all the other things involved with the PP just to get to the fill.
Here are some quick vids and a picture.
Fluid drain
https://youtu.be/SBQAf8iIYJwMe running a magnet through the fluid and picking stuff up.
https://youtu.be/3D36YVKB3t4And then the vent tube installed and what I wiped off the magnet after running it through the fluid.
Hope this helps anyone out there!
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