Differential and Transfer Case Fluid Change- My Observations

[Ramtirex]

You could start by reading the thread…..
They talk about fluids and opinions on what is best for days.

And where is it?

 

[TRXMIKE]

And where is it?

Try page one.

 

[Ramtirex]

Ravenol is good stuff. I used it when I changed the Transfer case fluid.
I wouldn’t hesitate to use for the differentials

I'm looking for oil for the distributor one is the mopar and then it gives me. Or as an alternative the German oil you put the German one ??? Gear noise problems ???

 

[Ramtirex]

Atf is thinner oil 10-20weight with better cleaning agents.
Reline is just a thinner oil with a lower cleaning affect.

Hudrolic tractor oil is a type of atf without the red dye. Usually a 10-20w
The lower oil has a better chance of not foaming at high rate of flow speed.


The older vehicles say a 205 t case from the 70's used 75w gear oil because they where a direct gear drive tcase.
The new ones are a sprocket and chain like a bicycle. So lower viscosity is used to not throw the thicker oil. You can absolutely use gear oil in it. But its not recommended due to it geting thrown all over the place instead of penatrating into the chain rollers.

Mopar has been using atf for years on there cases. My 07 ram takes atf+4 which is amsoil red top. The 98 i had same thing atf+4 my 79 chevy with a 208tcase also chain drive calls for dexos atf.

Mercon which was used by ford is more slippery and doesnt work. Same reason it crital to always use the correct type.

But you don’t have ram Trx is different

 

[Ramtirex]

As many know I venture way off the reservation with motor oil, gear oil, etc, to get the best product and result. Transmissions and clutched transfer cases such as ours…I try to hold closer to the spec. They are fickle. The reason there are so many ATFs is not just viscosity but friction modifier packages. Every design is looking for different characteristics for proper clutch lock up. Many multi-vehicle ATF blends like Amsoil are trying to find a happy medium that satisfies most requirements, but maybe is not ideal for all. And with any gearbox, there is a much smaller test library to reference, so it’s difficult to quantify what product is working well in a certain application, let alone what’s best. Especially in terms of clutch wear.

I look at it this way. My last transfer case sample with the OEM fluid looked great by any measure. Low wear and clean.
View attachment 146117
What can I even hope to improve? What problem am I addressing? None, really. The Ravenol just seemed like a slightly higher quality, PAO-based version of the factory stuff, so I went with it. Zero risk.

 

[Ramtirex]

As many know I venture way off the reservation with motor oil, gear oil, etc, to get the best product and result. Transmissions and clutched transfer cases such as ours…I try to hold closer to the spec. They are fickle. The reason there are so many ATFs is not just viscosity but friction modifier packages. Every design is looking for different characteristics for proper clutch lock up. Many multi-vehicle ATF blends like Amsoil are trying to find a happy medium that satisfies most requirements, but maybe is not ideal for all. And with any gearbox, there is a much smaller test library to reference, so it’s difficult to quantify what product is working well in a certain application, let alone what’s best. Especially in terms of clutch wear.

I look at it this way. My last transfer case sample with the OEM fluid looked great by any measure. Low wear and clean.
View attachment 146117
What can I even hope to improve? What problem am I addressing? None, really. The Ravenol just seemed like a slightly higher quality, PAO-based version of the factory stuff, so I went with it. Zero risk.

Did you put the renvol bw 44???

 

[LowPSI]

Holy shit. I'm going to advise you not work on your truck.

 

[Ramtirex]

Holy shit. I'm going to advise you not work on your truck.

What did you put as oil in the transfer case of the Trx ram

 

[Louk]

The first post lists out several part numbers and diy. He also links a video in which it’s stated what Ram says to use for all 3 fluids, gives detailed breakdown on how to do it, tools needed etc… then numerous other members (including myself) state what we have used and which kits we bought with links to the actual kits.

Just take 15-20 minutes and read through the thread. All of your questions are answered already. That or simply look through the owners manual.

 

[OGTRX22]

The first post lists out several part numbers and diy. He also links a video in which it’s stated what Ram says to use for all 3 fluids, gives detailed breakdown on how to do it, tools needed etc… then numerous other members (including myself) state what we have used and which kits we bought with links to the actual kits.

Just take 15-20 minutes and read through the thread. All of your questions are answered already. That or simply look through the owners manual.

15-20 sounds like the wrong weight. And I have never heard of "minutes" oil. Is it a new brand?

 

[Ramtirex]

The first post lists out several part numbers and diy. He also links a video in which it’s stated what Ram says to use for all 3 fluids, gives detailed breakdown on how to do it, tools needed etc… then numerous other members (including myself) state what we have used and which kits we bought with links to the actual kits.

Just take 15-20 minutes and read through the thread. All of your questions are answered already. That or simply look through the owners manual.

I saw the video but it doesn't tell me anything I just want to know what oil to put and if any of you have put a better one than mopar .. mopar that then there are different types one is 40-44 44-44 etc etc and I don't understand which one I should take because there is no one who can tell me

 

[RamSRTSoundsBetter]

I saw the video but it doesn't tell me anything I just want to know what oil to put and if any of you have put a better one than mopar .. mopar that then there are different types one is 40-44 44-44 etc etc and I don't understand which one I should take because there is no one who can tell me

This is one of these scenarios where it's best to just go to the service department and they'll see you out.

BW 44-40 (68049954AC) probably not current part number, 3 quarts. Get an extra if you can. Change every 20k-25k mi.

Amazon Link to BW 44-40