Lightweight Shockproof - GL4 or GL5? Hypoid?

[kyoo]

Which does Lightweight Shockproof qualify under? All it says in product info regarding this (http://www.redlineoil.com/product.aspx?pid=43&pcid=7)

is:
MTL, MT-85 & MT-90 are not for use in differentials with hypoid gears -- none of which is the lightweight shockproof.

Perhaps more importantly, is it designed for use in drivetrain parts with hypoid gears?

 

[MolaKule]

Originally Posted By: kyoo
Which does Lightweight Shockproof qualify under? All it says in product info regarding this (http://www.redlineoil.com/product.aspx?pid=43&pcid=7)

is:
MTL, MT-85 & MT-90 are not for use in differentials with hypoid gears -- none of which is the lightweight shockproof.

Perhaps more importantly, is it designed for use in drivetrain parts with hypoid gears?


MTL etc is a GL-4 rated lube and not appropriate for hypoid differentials.

Hypoid differentials require a GL-5 rated gear lube.

For a bit of extra protection, a 75W110 is a good all around GL-5 gear lube.

You don't need a shockproof type gear lube unless you might be racing.

 

[kyoo]

I will be racing - both autocross and road racing this summer.

I found a technical article from Redline that said shockproof will also reduce temperatures 25-75F degrees -- I don't know exactly how true that is, and for which compared to which, but I imagine there will still be improvements.

 

[MolaKule]

Are these vehicles or vehicle you will be racing have manual transmissions?

If AT's, then a 75W110 is all you need.

 

[kyoo]

Originally Posted By: MolaKule
Are these vehicles or vehicle you will be racing have manual transmissions?

If AT's, then a 75W110 is all you need.


Manual transmission - using GL4 75w90 in the trans, looking to use shockproof in the t-case. Just wanted to make sure it met specs, which it looks like it does.

 

[Rand]

what transfer case has hypoid gears in it?

 

[kyoo]

Originally Posted By: Rand
what transfer case has hypoid gears in it?


idk of the whole list, but the one I'm referring to is the Mitsubishi Evo - from 1996-2015, uses a hypoid ring and pinion gearset in the t-case

 

[Rand]

Originally Posted By: kyoo
Originally Posted By: Rand
what transfer case has hypoid gears in it?


idk of the whole list, but the one I'm referring to is the Mitsubishi Evo - from 1996-2015, uses a hypoid ring and pinion gearset in the t-case


Sounds like you want at least a 75w140 gl-5 or heavy shockproof(if not driven below 40f)

 

[kyoo]

I think those recs may be more of a CYA for those pushing high HP. given that I'm near stock and the stock fluid does 90wt I should be OK as long as it meets the specs, which it sounds like it does

 

[dailydriver]

The BEST way to know for sure is to call Red Line's tech, and ask for Dave.

He will answer ALL of your questions patiently, and also suggest which of their products (if any) are correct for your specific application.