TopperHarley

Glad you got it done. I need to do this again soon on mine. Some times a bit of a flush helps a little too. As long as there is no large particles of metal in the oil you should be fine. I used the Mopar stuff last time, close to after market price.

forgot to say after remove air box and filter have to remove next piece of intake which is held by a hose clamp

As shown in picture one the yellow box highlighted is part to be removed.
 
Step 1 remove engine cover, air fliter cover, air filter and air filter box then have to remove next piece of intake which is held by a hose clamp once removed should look like picture 2
 
As shown in picture 3 with the yellow circle the green cap is the vent tube. Remove cap I found easiest to remove vent tube from metal bracket used a flat screwdriver. Found easier that way then remove cap from tube, again had to use a flat screwdriver to losen hose from cap. Also you may notice that 2 rubber hoses were disconnected I thought I had to remove more but was not needed.
 
As shown in pic 4 is the syringe style transfer pump. Has a max capacity of 200mL ( in Canada) 
 
I then added 4 full tube with a total of 800ml of fluid but in the process I would pump about 50 mil then remove syringe to burp air so pressure dont build. Do this until all 800 ml is added and re install parts. 
 
Found best to put car on ramps first and made sure I could remove vent cap before draining. My fluid was really dirty im sure it was original with 185km on the car. 

ok thanks i will take that part off and look again will let you know if I find and do the job.. I'll try and take a pic if I can with it off
 

It’s air intake throttle body with plastic shroud leading to air filter. Little finicky with all plastic parts.

One section of intake manifold needs to be removed that is close to back of  engine compartment. You will then see  vent hose.
 
Won’t show up on engine             compartment pics that I’ve seen.
 

I was under my Journey today looking for the vent tube and cant find it ... I looked from above.. as asked before can you possible take a pic of the engine bay and roughly show where this tube is as I know mine needs a fluid change bad.

He stated AWD RT, so 6cyl.

Also use Mopar tranny fluid and filter.....

depends on what engine and trans you have ???? you didnt state what you have...............  also your biggest mistake was going to jiffy lube

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.