Valvoline 75W-90 full synthetic differential oil

[Eighty]

I decided to stop at a Valvoline Oil Service Center and asked what gear lube that use for the front diffs on our trucks, they said they use the 75W-90.

That’s like stopping at Taco Bell and asking what kind of steak to put in your pregnant wife’s burrito, and they say, “Ground Beef”.

Lol, ok I’m done with that, I promise

 

[TheWaterman83]

Actually "Red Line MT-LV" crosses over to the correct part number in their specs. MT-LV 70W/75W GL-4 Gear Oil

I'm buying 1 qt of the Red Line MT-LV to compare it with the OE fluid.

Once again, no one knows. It's your truck and your money. However, when push comes to shove (especially with a warranty), the fluid better match up. Red Line is telling they cross-reference. NOT Mopar. AmSoil, who I am super loyal to, does the same thing for both the t-case and trans. I used OEM for both. AmSoil for everything else: engine oil, front diff, rear diff, and I will more than likely use their coolant and brake fluid soon as well.

As I said, no one yet has been able to confirm the exact type/make/weight specs of the t-case and trans. Furthermore, both are made by ZF. ZF is very specific about their fluids. I've had ZF gear on everything from cars, trucks, to boats. On our boat, do what ZF says of "f**k around and find out" is the best way I can describe it. Unless you want to replace a $12k trans. Very good gears all around. But also very expensive and very temperamental.

Mopar Fluid - $32

https://www.partsgeek.com/kklt3gw-chrysler-300-differential-oil.html?utm_source=google&utm_medium=ff&utm_content=TS&utm_campaign=PartsGeek+Google+Base&utm_term=2021+Chrysler+300+Differential+Oil+Mopar+68049954AC+Front+Differential+21+Chrysler+Differential+Oil&fp=pp&gbm=a&cid=18313611776&gclid=EAIaIQobChMInMuwpL2ngQMVpiCzAB1cFgcYEAQYASABEgIhYfD_BwE

 

[TheWaterman83]

I really like the bags Valvoline uses. Makes filling the diff so much easier. But only reason we got Valvoline was because there wasn't any Lucas Oil stuff in the shelf when we went shopping.

AmsOil does the same and it's very convenient as well.

 

[RVTRKN]

Her is another Transfer case fluid, Gear Oil - Transfer Case Fluid - RAVENOL BW 44 a bit more expensive, it states the fact its specifically for the Borg Warner 44-40 and BW 44-44 as well as lists the Mopar part number. It also gives the oil compound as a PAO oil. The Mopar fluid bottle does not give the compound info but does have its for the Borg Warner 44-40 and BW 44-44. it @ $30.00 a quart.

 

[Mountain Whiskey]

I use Lucas too. Has always been good. As for a difference fron 85 to 90? Damn, you are the guy that worries about if your washer fluid is blue or yellow in a snow storm too huh? Don't get started on how you won't use WD-40 on a squeaky hinge because it isn't a "lubricant".

 

[HSKR R/T]

I use Lucas too. Has always been good. As for a difference fron 85 to 90? Damn, you are the guy that worries about if your washer fluid is blue or yellow in a snow storm too huh? Don't get started on how you won't use WD-40 on a squeaky hinge because it isn't a "lubricant".

Who you replying to?

 

[Mountain Whiskey]

Who you replying to?

The op. He asked about 5w difference in gear lube.

 

[Nsleone]

I used Valvoline 75W90 in the front diff, no issues so far. I did the change about 1,000 miles ago.

 

[TheWaterman83]

Her is another Transfer case fluid, Gear Oil - Transfer Case Fluid - RAVENOL BW 44 a bit more expensive, it states the fact its specifically for the Borg Warner 44-40 and BW 44-44 as well as lists the Mopar part number. It also gives the oil compound as a PAO oil. The Mopar fluid bottle does not give the compound info but does have its for the Borg Warner 44-40 and BW 44-44. it @ $30.00 a quart.

Ravenol is speculated to be what Mopar uses for the "Borg Warner 44 T-Case Fluid." The Mopar "8&9 Speed Trans Fluid" is actually ZF fluid, rebottled.

So once again, we circle back to its probably a good idea to use OEM in this case being it's cheaper by $4 a quart.

Seeing the theme now with ZF stuff?

 

[CHeYeNNe71]

Seeing the theme now with ZF stuff?

Yeah, use what you want?!?

 

[TheWaterman83]

Yeah, use what you want?!?

Sure. Then cue the whole....

"My transmission is shifting weird..."
"God this truck is a piece of crap."
"My 4wd doesn't work."

Then it's "Help RamCares!"

 

[CHeYeNNe71]

Sure. Then cue the whole....

"My transmission is shifting weird..."
"God this truck is a piece of crap."
"My 4wd doesn't work."

Then it's "Help RamCares!"

But can YOU verify it's the fluid? or just an assumption....( no need to answer like I know you want to, not an actual question )

I bet if you got to the nitty gritty a majority of the fluids are the same or within 1-3%. Just buy them all and send to laboratory for read out......

Anyways, enjoy whatever you decide to do OP!!

 

[Cbty2050]

I picked a truck I am working on, 2020 Ram 3.0 eco diesel. Attached recommended t-case fluid. Mobil LT fluid.....

 

[IvoryHemi]

I even used Mobil 1 with the friction modifier and not added any extra in my Rubicon as many others, with no issues.

Wrangler Rubicon rear differentials haven’t had a clutch-based limited slip since 2006.

So the friction modifier is completely unnecessary in 2007+ Rubicon’s

 

[TheWaterman83]

But can YOU verify it's the fluid? or just an assumption....( no need to answer like I know you want to, not an actual question )

I bet if you got to the nitty gritty a majority of the fluids are the same or within 1-3%. Just buy them all and send to laboratory for read out......

Anyways, enjoy whatever you decide to do OP!!

Go over to Bob the Oil guy. Look at their analysis. I've probably gotten deeper into what's in oil/fluid than a lot of people. There's just certain stuff it pays to use OEM unless you know there is an absolute, concrete, non-OEM substitute.

Like I said, I know ZF stuff well. I am sitting on a boat with two $55,000 marine diesels connected to two $10,000 ZF transmissions. I've spoken with the people at ZF. They are brilliant, make a good product, but very specific about how they want it maintained and filled. For frame of reference. They want those filled with straight SAE30, non-detergent. Literally, $4 a quart Wally World oil. And they even tell you that. No detergent.

There's also a lot of variables too. Did the people who used aftermarket fluid who have issues have it serviced right? Was the vehicle in general abused?

But that's my other point. Just eliminate the variables. If you can't find anything better and/or that crosses over to OEM...just use OEM.

There is a lot of speculation that ZF uses/designs their stuff around Ravenol products. I'm a diehard AmSoil guy. I'd used AmSoil mouthwash if they had it. I went OEM fluid in my trans and t-case.

 

[CHeYeNNe71]

Wrangler Rubicon rear differentials haven’t had a clutch-based limited slip since 2006.

So the friction modifier is completely unnecessary in 2007+ Rubicon’s

I'm not looking into it this late in the stage since I don't have one anymore, but I remember reading it needed it.

 

[CHeYeNNe71]

Go over to Bob the Oil guy. Look at their analysis. I've probably gotten deeper into what's in oil/fluid than a lot of people. There's just certain stuff it pays to use OEM unless you know there is an absolute, concrete, non-OEM substitute.

Like I said, I know ZF stuff well. I am sitting on a boat with two $55,000 marine diesels connected to two $10,000 ZF transmissions. I've spoken with the people at ZF. They are brilliant, make a good product, but very specific about how they want it maintained and filled. For frame of reference. They want those filled with straight SAE30, non-detergent. Literally, $4 a quart Wally World oil. And they even tell you that. No detergent.

There's also a lot of variables too. Did the people who used aftermarket fluid who have issues have it serviced right? Was the vehicle in general abused?

But that's my other point. Just eliminate the variables. If you can't find anything better and/or that crosses over to OEM...just use OEM.

There is a lot of speculation that ZF uses/designs their stuff around Ravenol products. I'm a diehard AmSoil guy. I'd used AmSoil mouthwash if they had it. I went OEM fluid in my trans and t-case.

Too much buddy, go get laid or something or even coffee!!

 

[TheWaterman83]

Too much buddy, go get laid or something or even coffee!!

Just trying to help and save people from themselves and money.

No one likes to see someone spend thousands of dollars more than they need to.

 

[Cbty2050]

Ravenol is speculated to be what Mopar uses for the "Borg Warner 44 T-Case Fluid."

Just use Mobil TL fluid like the manufacturer recommends.

 

[IvoryHemi]

I changed out my front/rear diff and transfer case at 25k miles.

- Valvoline synthetic 75w90 in front
- Valvoline synthetic 75w140 in rear w/ limited-slip (no additional friction modifier added)
- OEM transfer case fluid

Now at 73k miles with no issues.