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#4540484 - 10/11/17 06:20 PM Who Sells 90EP Gear Oil
Quadrasteer Offline


Registered: 06/22/04
Posts: 216
Loc: 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?

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#4540524 - 10/11/17 06:53 PM Re: Who Sells 90EP Gear Oil [Re: Quadrasteer]
Rand Offline


Registered: 08/20/03
Posts: 12638
Loc: 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
_________________________
2017 Jeep Cherokee Trailhawk V6

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#4540526 - 10/11/17 06:54 PM Re: Who Sells 90EP Gear Oil [Re: Quadrasteer]
JLawrence08648 Offline


Registered: 01/20/17
Posts: 232
Loc: 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.

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#4540558 - 10/11/17 07:33 PM Re: Who Sells 90EP Gear Oil [Re: Rand]
Quadrasteer Offline


Registered: 06/22/04
Posts: 216
Loc: 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.


Edited by Quadrasteer (10/11/17 07:33 PM)

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#4540587 - 10/11/17 07:57 PM Re: Who Sells 90EP Gear Oil [Re: Quadrasteer]
CT8 Offline


Registered: 10/09/14
Posts: 10925
Loc: Idaho
it there yellow metals in the auger and mostgear oils are additized to prevent yellow metal corrosion with the GL5 oils.
_________________________
"Don't let your preconceived notions get in the way of facts."
Geoff Metcalf

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#4540597 - 10/11/17 08:06 PM Re: Who Sells 90EP Gear Oil [Re: Quadrasteer]
mlatour Offline


Registered: 05/25/05
Posts: 163
Loc: 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.


Edited by mlatour (10/11/17 08:06 PM)

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#4540602 - 10/11/17 08:08 PM Re: Who Sells 90EP Gear Oil [Re: Quadrasteer]
Quadrasteer Offline


Registered: 06/22/04
Posts: 216
Loc: 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."

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#4540748 - 10/11/17 10:18 PM Re: Who Sells 90EP Gear Oil [Re: Quadrasteer]
2004tdigls Offline


Registered: 10/31/11
Posts: 483
Loc: maple ridge, bc
sae 90w is commonly used in mercedes differentials

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




Edited by 2004tdigls (10/11/17 10:28 PM)

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#4540756 - 10/11/17 10:32 PM Re: Who Sells 90EP Gear Oil [Re: Quadrasteer]
vwmaniaman Offline


Registered: 04/18/13
Posts: 129
Loc: 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.
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#4540809 - 10/12/17 12:45 AM Re: Who Sells 90EP Gear Oil [Re: Quadrasteer]
zeng Offline


Registered: 09/01/15
Posts: 2184
Loc: 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

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#4540814 - 10/12/17 12:59 AM Re: Who Sells 90EP Gear Oil [Re: Quadrasteer]
zeng Offline


Registered: 09/01/15
Posts: 2184
Loc: 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 ?




Edited by zeng (10/12/17 01:09 AM)

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#4540932 - 10/12/17 07:37 AM Re: Who Sells 90EP Gear Oil [Re: zeng]
Quadrasteer Offline


Registered: 06/22/04
Posts: 216
Loc: 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."

Top
#4540938 - 10/12/17 07:42 AM Re: Who Sells 90EP Gear Oil [Re: zeng]
Quadrasteer Offline


Registered: 06/22/04
Posts: 216
Loc: 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.

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#4540951 - 10/12/17 07:57 AM Re: Who Sells 90EP Gear Oil [Re: Quadrasteer]
Rand Offline


Registered: 08/20/03
Posts: 12638
Loc: 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.
_________________________
2017 Jeep Cherokee Trailhawk V6

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#4540981 - 10/12/17 08:35 AM Re: Who Sells 90EP Gear Oil [Re: Quadrasteer]
zeng Offline


Registered: 09/01/15
Posts: 2184
Loc: 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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