Rear Diff fluid advice - Page 2 - Toyota FJ Cruiser Forum
Transmissions / Transfer Cases / Traction Aids This area is for discussion, questions and problems with the FJ Cruiser's gear train, including topics on A-TRAC, VSC, locking diffs, gear ratios, manual vs. AT, etc.

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#11 (permalink) Old 02-23-2012, 04:20 PM
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Re: Rear Diff fluid advice

RedLine is good stuff, used it for may years in the BMW but around here it is difficult to locate and is about $14/qt vs $11.50 for the Amsoil.
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#12 (permalink) Old 02-23-2012, 04:25 PM
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Re: Rear Diff fluid advice

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istambull previously said: View Post
RedLine is good stuff, used it for may years in the BMW but around here it is difficult to locate and is about $14/qt vs $11.50 for the Amsoil.
I guarantee you that there is a speed shop in the DFW area that carries it. I used to buy it off the shelf in Austin, which had a horrible market compared to DFW when it comes to speed shops/4x4 shops.

Looks like quite a few dealers...

http://www.redlineoil.com/dealers.aspx

You can also just order it online.

Most people will use Mobile 1 over Amsoil in racing applications.

Last edited by Jotun; 02-23-2012 at 04:28 PM.
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#13 (permalink) Old 02-23-2012, 06:45 PM
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lol yeah I know where to get RL but to be honest both are kind of a pain on the ass to get.
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#14 (permalink) Old 02-23-2012, 07:33 PM
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Re: Rear Diff fluid advice

Also to quote Chase from ECGS:

"Lucas 85w140 Dyno oil. Do not waste your money on synthetics in Ring and pinion applications. Amsoil and Mobil 1 likely have no negative effect that we can see but no gain and you pay for it."

I just use M1 myself. Same for my T-case and tranny, that way I only have to carry one type on the trail.

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#15 (permalink) Old 02-23-2012, 08:56 PM
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Re: Rear Diff fluid advice

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FJinCO previously said: View Post
Also to quote Chase from ECGS:

"Lucas 85w140 Dyno oil. Do not waste your money on synthetics in Ring and pinion applications. Amsoil and Mobil 1 likely have no negative effect that we can see but no gain and you pay for it."

I just use M1 myself. Same for my T-case and tranny, that way I only have to carry one type on the trail.
For the first 10k miles, I'd use Dino instead of synthetic too. The problem is that Dino starts to break down quicker. Synthetic is better for longer. Period.
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#16 (permalink) Old 02-24-2012, 03:28 AM
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Re: Rear Diff fluid advice

Thanks for the responses. Going with M1 75-90 for now
(on sale this month at partstore). If the drained fluid looks real bad might replace it again after 1K miles.

Ed

2008 Ti 4x4 AT ORP
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#17 (permalink) Old 02-26-2012, 09:13 PM
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Re: Rear Diff fluid advice

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For the first 10k miles, I'd use Dino instead of synthetic too. The problem is that Dino starts to break down quicker. Synthetic is better for longer. Period.
Agree!.

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#18 (permalink) Old 02-27-2012, 07:53 AM
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Re: Rear Diff fluid advice

I run amsoil 75/140 u can use 75/90 it's just a "lighter" oil recommended simply for fuel economy. 140 is fine and will protect more esp if you tow or push her harder than the avg driver.

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#19 (permalink) Old 02-27-2012, 09:48 AM
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Re: Rear Diff fluid advice

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istambull previously said: View Post
Amsoil Severe Gear gets my vote
Mine too, been using it for my last 3 trucks. Fill it once and forget it.

http://www.synthetic-oil-tech.com/Ge...te%20Paper.pdf

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#20 (permalink) Old 02-27-2012, 12:28 PM
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Re: Rear Diff fluid advice

Quote:
5500 previously said: View Post
Thanks for the responses. Going with M1 75-90 for now
(on sale this month at partstore). If the drained fluid looks real bad might replace it again after 1K miles.
Which parts store? I'm gonna change mine out, too..
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