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#2627192 - 05/15/12 08:09 AM Comparing Amsoil's Gear Lubes
JZiggy Offline

Registered: 10/12/10
Posts: 743
Loc: GA
For a while I have run 75W90 Severe Gear in my 88 4Runner with Detroit TrueTracs in front and back. These are non-clutch limited slip diffs. I'm looking at freshening up the gear oil and am considering going with Amsoil's cheapest 80W90 synthetic lube to save some $$.

My question is, what is the added value from this cheaper grade to the Severe Gear grades? For low-HP, around-town and occasional moderate off-road use, is the more expensive product that much of an upgrade?

I still want to stick with Amsoil as I believe they do a great job with their drivetrain lubes. I run their MTF in my Hondas and MTG in the 4Runner and have always been more than happy with them.
Basic,, Simple,

#2627280 - 05/15/12 09:49 AM Re: Comparing Amsoil's Gear Lubes [Re: JZiggy]
qrtsteve Offline

Registered: 01/18/10
Posts: 12
Loc: Southern California

Hard to go wrong with the Amsoil they make a good product. For normal duty the 80W90 probably will work fine, what does Toyota recommend for the 4Runner?

#2627291 - 05/15/12 09:59 AM Re: Comparing Amsoil's Gear Lubes [Re: JZiggy]
JZiggy Offline

Registered: 10/12/10
Posts: 743
Loc: GA
The FSM, if I recall it correctly, specs 90W for normal weather and 80W90 for cold. GL-5 in the diffs, GL-4 or 5 in the trans and transfer.
Basic,, Simple,

#2627798 - 05/15/12 09:53 PM Re: Comparing Amsoil's Gear Lubes [Re: JZiggy]
Donald Offline

Registered: 03/21/04
Posts: 15594
Loc: Upstate NY
Given the diff only takes a small amount and you only change it every few years, what are you talking about in $$. Under $20 for both I would assume. It looks about $2/QT difference in price. You might be better off leaving the Amsoil SVG in there than new cheaper gear oil. Are you an Amsoil Preferred Buyer? Thats a better way to save some $$.
2015 Subaru Forester 2.5 engine/CVT PP & M1
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1999 Dodge Ram 2500 w/Cummins - Rotella T6 & M1