Hypoid vs. Limslip gear oils?

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Aug 25, 2018 | 05:48 AM

JUKE179r

Thread Starter

Camel Trophy

Joined: May 2016

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From: Britainistan, UK

Hypoid vs. Limslip gear oils?

Today I was going to drain and replace my transfer case oil. I went to the local car parts store and asked for a synthetic gear oil for my Disco’s transfer case. I was asked if I needed Hypoil or Limslip gear oil.
¿Que? ... What? Exsqueeze me?
I’m used to synthetic vs. semi-blend vs. traditional oils. I’ve never been asked about hypoid or limslip before.

Anyone know or use these two different gear oils for a Land Rover?

Last edited by JUKE179r; Aug 25, 2018 at 06:03 AM.

Aug 25, 2018 | 06:30 AM

jastutte

Recovery Vehicle

Joined: Jan 2011

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From: StL, MO

i'm assuming limslip is for Limited Slip Differentials. our trucks, in their stock form, do not have Limited Slip Differentials.

Aug 25, 2018 | 04:27 PM

partsguru

Mudding

Joined: Aug 2015

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From: Monroe, UT

Any gears with an angular mesh is a hypoid, the limited slip adds a "friction modifier" for those with clutches (limited slip)in the diff. Use hypoid. Russ

Aug 26, 2018 | 04:22 AM

JUKE179r

Thread Starter

Camel Trophy

Joined: May 2016

Posts: 3,969

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From: Britainistan, UK

Thanks guys for the info.
I guess there is more to this that I’ve read online. There’s been GL4 vs. GL5 gear oil debates I found on other LR forums when I googled limslip vs hypoid.
So I dunno...

Aug 26, 2018 | 03:43 PM

Gripen

Mudding

Joined: Dec 2014

Posts: 235

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From: WA

Quote:

Originally Posted by JUKE179r

Thanks guys for the info.
I guess there is more to this that I’ve read online. There’s been GL4 vs. GL5 gear oil debates I found on other LR forums when I googled limslip vs hypoid.
So I dunno...

For differentials and transfer case, use GL-5. They're designed to resist shearing that a hypoid gear does to gear oil. Not that it matters for our trucks, but GL-4 is meant more for manual transmissions with syncos. A GL-5 oil, with the sulfur compounds in it, will eat brass that most syncros are made of. Differentials don't have to worry about that as they don't normally contain so-called yellow metals (copper-containing metals such as brass and bronze).