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Who Sells 90EP Gear Oil #4540484
10/11/17 06:20 PM
10/11/17 06:20 PM
Joined: Jun 2004
Posts: 219
upstate NY
Quadrasteer Offline OP
Quadrasteer  Offline OP

Joined: Jun 2004
Posts: 219
upstate NY
My Toro 524 manual says to use SAE 90 EP gear oil in the auger gear case. This is what was posted on tractorbynet forum about substituting a regular 90W gear oil:

"The question in my mind is the Gl-4 or Gl-5. From what the guy at Mobil told me and what I read on google searches they are used for the same thing but different applications. Supposedly GL-5 has a high sulfur content and is not compatible with "yellow metals". Bronze, brass,etc. The Chevron Oil site has numerous warnings on using Gl-5 where Gl-4 products are specified and vice-versa."

The quest is who sells it, at a reasonable price, I can't seem to locate it. Does anyone sill make it?

Re: Who Sells 90EP Gear Oil [Re: Quadrasteer] #4540524
10/11/17 06:53 PM
10/11/17 06:53 PM
Joined: Aug 2003
Posts: 13,409
NE,Ohio
Rand Online content
Rand  Online Content

Joined: Aug 2003
Posts: 13,409
NE,Ohio
EP should be GL-5?

I dont think it really matters if its 90wt or 75w90 but if you are worried about shearing I guess you could do 75w140.

"straight" 90w gear oil is hard to find IMO.. maybe tractor supply has it.

one of the performance subarus spec'ed it in the rear diff


2019 Jeep Cherokee Trailhawk 2.0T
Re: Who Sells 90EP Gear Oil [Re: Quadrasteer] #4540526
10/11/17 06:54 PM
10/11/17 06:54 PM
Joined: Jan 2017
Posts: 433
NJ
JLawrence08648 Offline
JLawrence08648  Offline

Joined: Jan 2017
Posts: 433
NJ
Why don't you try a mower dealer? I know John Deere dealers carry it.

My preference is always synthetic because of the enormous resistance 85w-90w has in the cold. I also only use synthetic motor oil in the engine in my snowblowers.

Re: Who Sells 90EP Gear Oil [Re: Rand] #4540558
10/11/17 07:33 PM
10/11/17 07:33 PM
Joined: Jun 2004
Posts: 219
upstate NY
Quadrasteer Offline OP
Quadrasteer  Offline OP

Joined: Jun 2004
Posts: 219
upstate NY
Originally Posted By: Rand
EP should be GL-5?

I dont think it really matters if its 90wt or 75w90 but if you are worried about shearing I guess you could do 75w140.

"straight" 90w gear oil is hard to find IMO.. maybe tractor supply has it.

one of the performance subarus spec'ed it in the rear diff


It's the "Supposedly GL-5 has a high sulfur content and is not compatible with "yellow metals". Bronze, brass,etc. The Chevron Oil site has numerous warnings on using Gl-5 where Gl-4 products are specified and vice-versa."

There's a reason they spec out that particular oil.

Last edited by Quadrasteer; 10/11/17 07:33 PM.
Re: Who Sells 90EP Gear Oil [Re: Quadrasteer] #4540587
10/11/17 07:57 PM
10/11/17 07:57 PM
Joined: Oct 2014
Posts: 13,275
Canyon County Idaho
CT8 Offline
CT8  Offline

Joined: Oct 2014
Posts: 13,275
Canyon County Idaho
it there yellow metals in the auger and mostgear oils are additized to prevent yellow metal corrosion with the GL5 oils.


2015 Ford F150 2.7
2018 Ford F350 6.2
Re: Who Sells 90EP Gear Oil [Re: Quadrasteer] #4540597
10/11/17 08:06 PM
10/11/17 08:06 PM
Joined: May 2005
Posts: 166
near Montreal, Canada
mlatour Offline
mlatour  Offline

Joined: May 2005
Posts: 166
near Montreal, Canada
By memory, SAE 90EP is sometimes used in marine outboard lower units,
myself have always used 75W-140 in my snowblower gearcase.

Last edited by mlatour; 10/11/17 08:06 PM.
Re: Who Sells 90EP Gear Oil [Re: Quadrasteer] #4540602
10/11/17 08:08 PM
10/11/17 08:08 PM
Joined: Jun 2004
Posts: 219
upstate NY
Quadrasteer Offline OP
Quadrasteer  Offline OP

Joined: Jun 2004
Posts: 219
upstate NY
Great article on the GL's

http://www.widman.biz/uploads/Transaxle_oil.pdf

One paragraph, "When someone tells you that their GL
5 covers GL4, remember they are correct as far as EP
protection, but that is only half the answer. When they say their
Sulfur/Phosphorous additive will not
corrode the yellow metals, they are also correct, but if there are enough to meet GL
5 protection, they
will slowly peel away your brass synchronizers."

Re: Who Sells 90EP Gear Oil [Re: Quadrasteer] #4540748
10/11/17 10:18 PM
10/11/17 10:18 PM
Joined: Oct 2011
Posts: 521
maple ridge, bc
2004tdigls Offline
2004tdigls  Offline

Joined: Oct 2011
Posts: 521
maple ridge, bc
sae 90w is commonly used in mercedes differentials

http://www.blauparts.com/proddetail.asp?prod=J1C1135%2D001%2D999



Last edited by 2004tdigls; 10/11/17 10:28 PM.
Re: Who Sells 90EP Gear Oil [Re: Quadrasteer] #4540756
10/11/17 10:32 PM
10/11/17 10:32 PM
Joined: Apr 2013
Posts: 203
Kevil,Ky
vwmaniaman Offline
vwmaniaman  Offline

Joined: Apr 2013
Posts: 203
Kevil,Ky
I can't find any GL4 in our town so I just order it from Amazon. My classic VW's all specify GL4 for the brass and bronze.


Don't waste your time on a slipshod repair.
Re: Who Sells 90EP Gear Oil [Re: Quadrasteer] #4540809
10/12/17 12:45 AM
10/12/17 12:45 AM
Joined: Sep 2015
Posts: 2,559
Malaysia
zeng Offline
zeng  Offline

Joined: Sep 2015
Posts: 2,559
Malaysia
Originally Posted By: Quadrasteer
It's the "Supposedly GL-5 has a high sulfur content and is not compatible with "yellow metals". Bronze, brass,etc. The Chevron Oil site has numerous warnings on using Gl-5 where Gl-4 products are specified and vice-versa."

There's a reason they spec out that particular oil.

If there is such current statement, what's the context.

It's EP gear oils is claimed

Re: Who Sells 90EP Gear Oil [Re: Quadrasteer] #4540814
10/12/17 12:59 AM
10/12/17 12:59 AM
Joined: Sep 2015
Posts: 2,559
Malaysia
zeng Offline
zeng  Offline

Joined: Sep 2015
Posts: 2,559
Malaysia
Originally Posted By: Quadrasteer
Great article on the GL's

http://www.widman.biz/uploads/Transaxle_oil.pdf

One paragraph, "When someone tells you that their GL
5 covers GL4, remember they are correct as far as EP
protection, but that is only half the answer. When they say their
Sulfur/Phosphorous additive will not
corrode the yellow metals, they are also correct, but if there are enough to meet GL
5 protection, they
will slowly peel away your brass synchronizers."


Superficially sounds plausible ........
but ..... does it equates a GL4 do not 'peal away' or 'peel lesser amount away' of brass synchronizers ?
What/where is the physics and mechanisms of synchronizer wear above ?
Is the above Delo Gear EP5 'peels more' ???
Current buffered additives in GL5 ?



Last edited by zeng; 10/12/17 01:09 AM.
Re: Who Sells 90EP Gear Oil [Re: zeng] #4540932
10/12/17 07:37 AM
10/12/17 07:37 AM
Joined: Jun 2004
Posts: 219
upstate NY
Quadrasteer Offline OP
Quadrasteer  Offline OP

Joined: Jun 2004
Posts: 219
upstate NY
Originally Posted By: zeng
Originally Posted By: Quadrasteer
It's the "Supposedly GL-5 has a high sulfur content and is not compatible with "yellow metals". Bronze, brass,etc. The Chevron Oil site has numerous warnings on using Gl-5 where Gl-4 products are specified and vice-versa."

There's a reason they spec out that particular oil.

If there is such current statement, what's the context.

It's EP gear oils is claimed




This is from the article that I posted above:

"When someone tells you that their GL
5 covers GL4, remember they are correct as far as EP
protection, but that is only half the answer. When they say their
Sulfur/Phosphorous additive will not
corrode the yellow metals, they are also correct, but if there are enough to meet GL
5 protection, they
will slowly peel away your brass synchronizers."

Re: Who Sells 90EP Gear Oil [Re: zeng] #4540938
10/12/17 07:42 AM
10/12/17 07:42 AM
Joined: Jun 2004
Posts: 219
upstate NY
Quadrasteer Offline OP
Quadrasteer  Offline OP

Joined: Jun 2004
Posts: 219
upstate NY
Originally Posted By: zeng
Originally Posted By: Quadrasteer
Great article on the GL's

http://www.widman.biz/uploads/Transaxle_oil.pdf

One paragraph, "When someone tells you that their GL
5 covers GL4, remember they are correct as far as EP
protection, but that is only half the answer. When they say their
Sulfur/Phosphorous additive will not
corrode the yellow metals, they are also correct, but if there are enough to meet GL
5 protection, they
will slowly peel away your brass synchronizers."


Superficially sounds plausible ........
but ..... does it equates a GL4 do not 'peal away' or 'peel lesser amount away' of brass synchronizers ?
What/where is the physics and mechanisms of synchronizer wear above ?
Is the above Delo Gear EP5 'peels more' ???
Current buffered additives in GL5 ?


That's your opinion, do you know for sure that these oils do not have enough sulfur to damage the "yellow" metals? The answer is no...If you don't want to believe or agree with the info in that article that's up to you. I'm looking for a 90EP GL-4 oil or a known substitute.

Re: Who Sells 90EP Gear Oil [Re: Quadrasteer] #4540951
10/12/17 07:57 AM
10/12/17 07:57 AM
Joined: Aug 2003
Posts: 13,409
NE,Ohio
Rand Online content
Rand  Online Content

Joined: Aug 2003
Posts: 13,409
NE,Ohio
Almost Everyone who dumped in here after my post above were talking about manual transmissions.

there are no synchros in a snowblower gear case.

If it calls for EP that is generally GL-5
GL-4 has antiwear additives but no extreme pressure additives.

Also a snowblower in the winter if you are using it for 3-4 hours at a time I would consider a
75w110 or 75w140. If you arent blowing 2ft of snow for hours at a time 75w90 would be fine.

So in summary EP and GL-5 are similar , EP and GL-4 would be a unicorn good luck.


2019 Jeep Cherokee Trailhawk 2.0T
Re: Who Sells 90EP Gear Oil [Re: Quadrasteer] #4540981
10/12/17 08:35 AM
10/12/17 08:35 AM
Joined: Sep 2015
Posts: 2,559
Malaysia
zeng Offline
zeng  Offline

Joined: Sep 2015
Posts: 2,559
Malaysia
Originally Posted By: Quadrasteer
Originally Posted By: zeng
Originally Posted By: Quadrasteer
It's the "Supposedly GL-5 has a high sulfur content and is not compatible with "yellow metals". Bronze, brass,etc. The Chevron Oil site has numerous warnings on using Gl-5 where Gl-4 products are specified and vice-versa."

There's a reason they spec out that particular oil.

If there is such current statement, what's the context.

It's EP gear oils is claimed






This is from the article that I posted above:

"When someone tells you that their GL
5 covers GL4, remember they are correct as far as EP
protection, but that is only half the answer. When they say their
Sulfur/Phosphorous additive will not
corrode the yellow metals, they are also correct, but if there are enough to meet GL
5 protection, they
will slowly peel away your brass synchronizers."


Come on, don't fraudulently put words that Widman has NEVER said in the article into his mouth !!!
Isn't English your native language ???

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