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Silicone diff oil?

Hunter90 HD

Member
Messages
11
Hi everyone,

I am playing around with the idea of using silicone shock oil in the differentials as apposed to grease.

Has anyone used silicone diff oil before?
Can anyone recommend a silicone shock oil?

I have been looking at the fastrax cml racing pure diff oil which looks food, has anyone used this before?

cheers
 

olds97_lss

Well-Known Member
Messages
2,456
Location
Dekalb, IL 60115
I run 50K in the front/rear diffs. Seems to work well for bashing, doesn't leak much, if at all. I end up with mild positraction, so if I have 2 wheels off the ground, hung up on something, power still makes it to the wheels that touch. I run 100k in my 6S outcast f/r diffs.
 

Jabbo

Member
Messages
20
Well the question was that has anyone used silicone SHOCKOIL in their DIFFERENTIALS. I'm still wondering why would you wanna do that. For bashing it doesnt matter what you use, grease keeps the diffs more open and they last longer. Shock and diff oil both same price so why would you wanna do that?
 

olds97_lss

Well-Known Member
Messages
2,456
Location
Dekalb, IL 60115
SHOCK and DIFF oil are usually the same thing, silicone based oil. The only real difference is shock oil is typically a lot lower viscosity.
 

Jabbo

Member
Messages
20
So if you go to store, you can buy what ever viscosity shock oil and what ever viscosity diff oil, why would you buy shock oil for diff?
 

olds97_lss

Well-Known Member
Messages
2,456
Location
Dekalb, IL 60115
If you wanted really light diff action I guess. 80wt shock oil is 1000cst which is getting into diff oil territory. They just call the lighter stuff shock oil and 2000CST+ diff oil, but when it's diff oil, it's typically referred to in "cst" vs "wt". Both are silicone based oils. My arrma truck uses 1000cst shock oil in the shocks, which is kind of annoying. Would have been nice if they used pistons with a bit smaller hole so you could actually adjust the shocks without having to mix it with 2k/3k diff oil to make it a bit heavier.

Either way, I was just assuming the OP was asking about using oil in the diff instead of grease (which makes it almost an open diff), so I was giving him an example of the cst of oil I use in mine.
 
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