Gearbox and diff oil

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Re: Gearbox and diff oil

Postby RafaCalde » Wed Apr 14, 2010 4:27 am

cost is also what made me decide royal purple over anything else. that and availability. i use 4 quarts 75/90 to one quart synchromesh. shifts are pretty smooth but i think they'll get better once i get the extended pushrod, shifter and cable bushings, and ss clutch line installed along with rotating the sugar cube. i'm also gonna put rp into the diff. i'll probably switch to redline eventually but i'm just gonna stick with what i can get readily for now.
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Re: Gearbox and diff oil

Postby aus jd 2703 » Sun Jul 18, 2010 12:43 pm

ok so its crunch time i need gearbox oil, i can get redline or royle purple for $25 a quart which is cheap as it gets in australia.
so what yas think?
mt90 or syncromax? or maybe a different redline? theres a few :doh:
im thinking mt90 as it seems a good compromise between syncro protection and front diff protection.
cheers
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Re: Gearbox and diff oil

Postby aus jd 2703 » Thu Jul 29, 2010 10:48 am

ok im confused mt90 or 75w 90ns? they both seem to do what is desired but which does it better?
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Re: Gearbox and diff oil

Postby 5thgenbliss » Thu Nov 18, 2010 4:24 pm

forgot to post my update on this thread. I've been running Redline 75w90NS for E151F tranny/diff up front for about 10K now since my rebuild. Everything is running great. Shifts are smooth and quick. this has been on a spirited daily driver. The NS is the ticket for me.
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Re: Gearbox and diff oil

Postby Flying Bajan » Mon Nov 22, 2010 2:55 pm

I totally agree.
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Re: Gearbox and diff oil

Postby Rallly » Fri Dec 11, 2015 2:46 am

What do you guys think about mixing 4quarts AMSOIL Severe Gear and 1quart Pennzoil Syncromesh? Anyone try this in their All Trac Transmission?
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Re: Gearbox and diff oil

Postby Akihero » Fri Dec 11, 2015 8:08 am

Anyone try Valvoline high performance 80w-90 ( i was looking on break from work for the 75-90 at local store only had the 80 just wondering what people thought)
Valvoline® High Performance Gear Oil is a thermally stable, extreme-pressure gear lubricant that withstands severe temperatures and shock loading while providing excellent anti-wear, anti-scuffing, rust and corrosion protection.

Product Features:
Outstanding thermal stability for cleanliness and longer service life
Reduced chattering in limited-slip differentials
Gear teeth wear protection from pitting and scouring
All hypoid differentials (conventional and limited slip) and manual transmissions in passenger cars, light trucks, sport utility vehicles, vans and heavy-duty trucks where an API-GL5 or MT-1 fluid is specified.
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Re: Gearbox and diff oil

Postby All-TracDreams » Sat Dec 12, 2015 1:36 am

Toyota Gear Oil Super, part # 08885-02106
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Re: Gearbox and diff oil

Postby Rallly » Tue Mar 14, 2017 1:13 am

Okay so is there only 1 drain plug on the ST185 AllTrac Transmission? Also what would be the best in it along with the rear diff?
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Re: Gearbox and diff oil

Postby Rallly » Thu Mar 16, 2017 5:21 pm

Is royal purple 75w90 in the rear diff a wise choice guys??
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Re: Gearbox and diff oil

Postby Corey » Thu Mar 16, 2017 10:24 pm

As long as its a GL-5 fluid, then sure. I still prefer Redline personally.
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Re: Gearbox and diff oil

Postby Rallly » Fri Mar 17, 2017 12:06 pm

Corey wrote:As long as its a GL-5 fluid, then sure. I still prefer Redline personally.



RP website says it can be used were GL-5 and GL-4 are needed. So I assume Royal Purple 75w-90 is okay?
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Re: Gearbox and diff oil

Postby Corey » Fri Mar 17, 2017 9:51 pm

Royalpurple MaxGear 75W90 - sure (the site claims GL5 or 4)
I wouldn't use their Syncromax 75W90 because its not GL5.
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