Best place to buy Mopar fluids in bulk?

Macdaddy4738

Macdaddy4738

Well-Known Member
Joined
Jun 1, 2005
Need to do the transmission and diffs on my Gladiator, but I can't find a good source for Mopar fluids, especially the transmission stuff. Everything I've read says to stick with the Mopar tranny fluid (although I suppose it's just like any other). Does Jeep/Stellantis say the transmission is a "lifetime" fluid? Sure, but they're wrong.

I suppose the other question should just be, where does one buy any fluid in bulk? I need to do oil changes on all three of my vehicles and wouldn't mind finding a place that'll sell at a discount for bulk purchases.
 
Interested to know how you change the trans fluid in the gladiator. I'm sure there's a method, just aggravated there's not a conventional fill tube
 
The 8 speed is a ZF unit, when I had one in my Ram I remember reading it was best not to shop around for alternatives fluids. That being said, Mopar is probably just rebranding the ZF factory fill.

I think the fluid is green from the factory and you need a scan tool to force the transmission to open the cooling circuit. I watched enough videos on it that I decided this was a job I would farm out when the time came, as I didn't have a lift.


Looks like a bunch of euro parts stores have some of the best prices
 
Last edited:
Clubbs said:
Interested to know how you change the trans fluid in the gladiator. I'm sure there's a method, just aggravated there's not a conventional fill tube
Click to expand...

I bought THIS for it. Adds a fill plug and like an additional quart of fluid.

I've read nothing about forcing any sort of cooling circuit. Everything I've found so far said it's just a standard fill.

ZF recommends a fluid change at 50k. Jeep says it's lifetime but that's kinda bullshit honestly. My warranty was up in like February anyway.
 
Awesome. I see the drain plug, but how do you fill it? Mentions a 1/4" npt plug I would assume for a temp sensor but mine already has a trans temp sensor stock, so is that the "fill" and you pump it in???
 
Clubbs said:
Awesome. I see the drain plug, but how do you fill it? Mentions a 1/4" npt plug I would assume for a temp sensor but mine already has a trans temp sensor stock, so is that the "fill" and you pump it in???
Click to expand...

The transmission does have a fill plug. Somewhere on the passenger side IIRC. The INSTALL GUIDE has the relevant information. I haven't installed it yet, but the quality seems really good for the price. I also ordered their diff. covers because....why not? They also seem quite nice for the price.

EDIT* Reading the install guide in more depth, there's obviously a workaround in the install regarding that transmission cooling circuit.
 
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