IS F (2008-2014) Discussion topics related to the IS F model

Rear Differential Gear Oil Question

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Old 03-14-18, 12:55 AM
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HyunR
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Default Rear Differential Gear Oil Question

Hey~ my car is 2010 ISF and just hit 100k miles
and I want to do rear diff oil change soon but which one is oem oil?
Toyota Differential Gear Oil LT GL-5 75W-85? or LT GL-5 75W-85(LSD) or LK GL-5 75W-85 ???
i don't know which one is correct one....
Old 03-14-18, 11:26 AM
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jdmSW20
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If I remember correctly as long as it meets GL-5 you should be fine whichever you choose. But I'm sure its the one that starts with LX if you have torsen diff

Last edited by jdmSW20; 03-14-18 at 11:30 AM.
Old 03-14-18, 01:43 PM
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Jeff Lange
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If you're using the factory gear oil, use the LX 75W85, LT is for non-LSD models (08-09 IS F). Using LT with the Torsen does not work well.

Jeff
Old 03-14-18, 05:52 PM
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MisterSkiz
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Make sure you get new crush rings before you open up the fill and drain bolts.
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Old 03-14-18, 08:33 PM
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HyunR
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Thank you for your advices
LX 75W85 GL-5 will be used! also crush rings ~
Old 03-15-18, 07:28 AM
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UCrazyKid
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Use this stuff, it is awesome.
http://products.lelubricants.com/ite...302/1605-quart
Old 03-15-18, 10:55 AM
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67mattbo
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Default Lexus parts

Went by South Bay Lexus and bought a crush ring. Parts said they have the oil in back in bulk for service, but available at the parts counter.
Old 03-17-18, 04:41 PM
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HyunR
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TOYOTA Genuine Diff Gear Oil LX GL-5 75W-85 for LSD


Axle Housing Drain Plug Crush Ring


JUST PARTS $160.70!!!!
Old 03-17-18, 09:01 PM
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lobuxracer
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Wow. I would never pay that for gear oil. You could have bought a gallon of Red Line Shockproof for half that, and Shockproof is one of the best diff oils out there. Even the OS Giken super special OS250R diff oil (which I think is stupid expensive) is only $50 a liter.
Old 03-18-18, 11:00 PM
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IronNam
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Why would you use LSD gear oil for a differential that doesn't use a clutch? It's a Torsen, it's all gears inside that unit. Last I want in there is to add a friction modifier.
Old 03-19-18, 01:04 AM
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Jeff Lange
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Originally Posted by IronNam
Why would you use LSD gear oil for a differential that doesn't use a clutch? It's a Torsen, it's all gears inside that unit. Last I want in there is to add a friction modifier.
LX Gear Oil is not for clutch-type LSD's, it's for Torsen type LSD's. You can use a regular non-LSD gear oil without friction modifier in the Torsen without issue for the most part, however the Toyota LT gear oil (used in 08-09 IS F and other non-Torsen differentials) doesn't work well with the Torsen T2 from my experience.

Interesting price on the LX fluid in the USA, it's quite a bit cheaper in Canada.

Jeff
Old 03-19-18, 01:29 AM
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gravesg
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Fam you overpaid for that fluid.
and by overpaid .. i mean threw money down the drain.

amsoil, and redline had you covered for wayyyyyy less than what you shelled out .. and their fluids are world class.

but as usual .. if your happy, I'm happy, and the diff is happy.

Case closed.
Old 03-19-18, 09:07 AM
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Superman60
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That's way too much to pay for oil.
Old 03-19-18, 09:37 AM
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jdmSW20
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Yeah I have to agree with everyone above, I think you got rolled up. I paid around that price at the dealership for oil, change, and labor combined
Old 03-19-18, 09:44 AM
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Originally Posted by IronNam
Why would you use LSD gear oil for a differential that doesn't use a clutch? It's a Torsen, it's all gears inside that unit. Last I want in there is to add a friction modifier.
I would because I have the Giken diff, but simply from a cost perspective, the Toyota stuff is ridiculously priced compared to some of the most expensive stuff out there. It reminds me of the infamous V-160 oil for the Getrag in the MkIV Supra. $50 a liter for what amounts to Dexron II (if you do all the homework on the specs). All because Toyota distributed it.


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