Wet brake oil in ltd slip diff

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mrl

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I was wondering what effect (if any) would there be using "wet brake" type diff oil in a torque sensing ltd slip diff. Bad move, no effect, or beneficial ?
 
"Wet brake and differential oil" for a diff with both in the same housing. The oil in this kind of diff can get much hotter if the wet brake is used a lot.
 
Bad move, unless it's for short term temporary use.
Wet brake (Transmission) oils doesn't possess adequate level of EP additives for (hypoid gear) differentials.
 
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Temp use yes. Was given the oil as a gift. Thought I'd try it as sort of a flush. After a bit of use will change it out again cause do have the correct hypoid oil as well. Thks for the input y'all.
 
That exactly does the oil go into a tractor or forklift maybe Air craft ground equipment? I have for years worked on fork lifts with wet brakes and have owned 2 tractors with wet brakes . To get as proper an answer we need a proper question. Usually the system uses shared oil and the differentials are not a hypoid gear arrangement and use a specific oil. While we can play an educated oil roulette some times we do good and benefit. Usually the cost of replacing components makes buying the proper speced oil a bargain.
 
International Harvester Hy-Tran fluid does it all:

Wet Brakes, Wet clutches, and hypoid gear EP

I think John Deere calls their version "Hy Gard"
 
Originally Posted by Linctex
International Harvester Hy-Tran fluid does it all:

Wet Brakes, Wet clutches, and hypoid gear EP

I think John Deere calls their version "Hy Gard"

Hypoid gear rated?
 
Originally Posted by CT8
Originally Posted by Linctex
International Harvester Hy-Tran fluid does it all:

Wet Brakes, Wet clutches, and hypoid gear EP

I think John Deere calls their version "Hy Gard"

Hypoid gear rated?



Absolutely -- everything in the tractor rear-end is lubed with the same oil
 
I dont want to open new topic for that...

...can someone explain to me why is GL5 diff oil with MoS2 not suitable for LSD diff?

I did 50/50 mix with what was in it though (dont want to waste 75w140 LSD castrol I have on shelve intil I dont refurbish rear diff properly)...

Tnx
 
Originally Posted by Kamele0N
I dont want to open new topic for that...

...can someone explain to me why is GL5 diff oil with MoS2 not suitable for LSD diff?


Tnx


MOS2 is primarily a friction modifier that can interfere with and compete with the proper LSD additive chemistry.
 
Originally Posted by mrl
I was wondering what effect (if any) would there be using "wet brake" type diff oil in a torque sensing ltd slip diff. Bad move, no effect, or beneficial ?


There may be different types of clutching mechanisms involved which is why there is a specific additive chemistry for each type of mechanism.
 
Originally Posted by MolaKule


MOS2 is primarily a friction modifier that can interfere with and compete with the proper LSD additive chemistry.

Am I reading you properly? If MoS2 competes here with LSD additive...then there will be no harm... At least not in 50/50 ratio (I am asuming here that the oil that was previously in a diff was LSD one)
 
Originally Posted by Kamele0N
Originally Posted by MolaKule


MOS2 is primarily a friction modifier that can interfere with and compete with the proper LSD additive chemistry.

Am I reading you properly? If MoS2 competes here with LSD additive...then there will be no harm... At least not in 50/50 ratio (I am asuming here that the oil that was previously in a diff was LSD one)



The problem is MOS2 dominates even at low levels. Point is, you have to use different chemistry for different machine applications.
 
Every UTF I have ever seen or used is rated GL4. You need a GL5 rated fluid.

Tractors do not use a hypoid differential gear set.

I believe the problem with MOS2 is that it will embed in the friction material and modify the characteristics causing the LSD to perform differently than designed.

Myself I would never use it in a differential spec'ing an EP lube not even for a minute. If it were OK for an EP lube do you think Case IH would still sell an EP 80/90 lube?
 
Originally Posted by Fred_Garvin
I believe the problem with MOS2 is that it will embed in the friction material and modify the characteristics causing the LSD to perform differently than designed.

+1
MoS2 is solely about friction reduction.
LSD additives is not. It's about achieving desired ratio of dynamic coefficients of friction to static coefficients of friction.
Both are friction modifiers ,though.
 
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Tnx....I need 3 quarts of that full synthetic XWXX oil
smile.gif
 
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