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Found 2 results

  1. PTU Fluid Change D.I.Y.

    I changed the PTU fluid today and wanted to pass along some lessons learned. 1) It wasn't practical for me to fill the PTU using the fill plug, so I opted to modify the drain plug for fill/drain and it worked well. 2) Modification included drill/tap drain plug for 1/4" NPT to 1/8" NPT fitting and 1/8" NPT plug drilled for safety wire (see pix's). 3) I used Mobil 1 LS 75W-90 synthetic and warm it up first to help it pump easier. 4) Use oil transfer pump with longer 3/16 diameter pick-up tube so it can reach the bottom of the bottle https://www.amazon.com/gp/product/B000BQW5LK/ref=ppx_yo_dt_b_asin_title_o02__o00_s00?ie=UTF8&psc=1 5) Remove exhaust support bracket so you can get both hands in position to remove the fill hose, cover the drain hole after filling, and get the 1/8" plug threaded into the drain plug. I suggest you try this many times with a dry PTU... practice makes perfect... and less clean up. 6) Mark the bottle so you know when you reach the 28 oz. point. I added an additional 1 to 1.5 oz in case I spilled any while performing tube removal after filling. It should be noted that the fill hose had a snug fit into the pipe fitting so it sealed well. I added some electrical tape to the tube in case I needed to create a seal between the tube and fitting (see pix). I also used Permatex thread sealant #59214 (high temperature). 7) Use safety wire on the 1/8" pipe plug to keep everything in place since the installation torque will be lower because you'll be tightening the 1/4" NPT fitting to seat the factory drain plug. 8) Reinstall the exhaust support bracket and add a dab of antiseize to the exhaust bolt for future removal. Note: I recommend changing the fluid every 20K miles, that cat will cook the PTU fluid and changing regularly is cheap insurance. Additionally, I looked at using the PTU vent tube as a fill port, but it was easier to use the drain plug. You can use the vent tube but you can only add 2 oz. at a time until the trapped air in the PTU case is "burped" to allow the fluid to fill. Forcing the fluid with pressure will potentially create a leak path past one of the seals.
  2. PTU and RDA fluids

    hey, My RDA and PTU fluids are due for a change (on a '09 SXT) and I can't find any info on how to do it or how much fluid I need. The only thing I know for sure is I need to use 75W-90 Oil. Has anybody ever done this before? I've looked in the service manual and nothing comes up. Thanks, Sean