Rear Differential Gear Oil Question
03-19-18, 09:51 AM
#16
Curious now, does anyone know what sort of rear diff my 07 IS250 has? Wasn't able to find this info on Google.
Also an oil recommendation for that type would be amazing, because I want to change mine out soon.
Also an oil recommendation for that type would be amazing, because I want to change mine out soon.
03-19-18, 01:55 PM
#17
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It has an open differential. Any GL5 oil will be fine.
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Viru (03-19-18)
03-20-18, 04:56 AM
#18
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.
Yeah, on my V160 I'm running Toyota Type 4 fluid. Best alternative compared to anything else on the market.
Back to the diff, I'm running Amsoil's synthetic severe gear oil, 75W-90.
Not sure if it's my 265's from a 255, but smashing the throttle to pull a u turn drift ends up in my inner tire spinning every time until I hit 2nd gear and it'll swing out. I swear new diff fluid w/o friction modifiers should be affecting it.
03-23-18, 09:59 PM
#20
Driver School Candidate
Thread Starter
04-12-21, 11:47 AM
#25
Pole Position
It was meant for the guy with the stock Torsen. It just didn't make sense to put friction modifiers in a Torsen diff.
Yeah, on my V160 I'm running Toyota Type 4 fluid. Best alternative compared to anything else on the market.
Back to the diff, I'm running Amsoil's synthetic severe gear oil, 75W-90.
Not sure if it's my 265's from a 255, but smashing the throttle to pull a u turn drift ends up in my inner tire spinning every time until I hit 2nd gear and it'll swing out. I swear new diff fluid w/o friction modifiers should be affecting it.
Yeah, on my V160 I'm running Toyota Type 4 fluid. Best alternative compared to anything else on the market.
Back to the diff, I'm running Amsoil's synthetic severe gear oil, 75W-90.
Not sure if it's my 265's from a 255, but smashing the throttle to pull a u turn drift ends up in my inner tire spinning every time until I hit 2nd gear and it'll swing out. I swear new diff fluid w/o friction modifiers should be affecting it.
Just to verify a Torsen LSD does not have any clutches correct, and only has gears so it doesn't need a gear oil with any friction modifiers correct?
Last edited by MileHIFcar; 04-12-21 at 12:06 PM.
04-12-21, 12:50 PM
#26
Interesting on the friction modifiers if they are needed for Torsen diffs or not?🤔......Amsoil's severe gear oil 75W-90 doesn't list any friction modifiers in the specs?
Just to verify a Torsen LSD does not have any clutches correct, and only has gears so it doesn't need a gear oil with any friction modifiers correct?
Just to verify a Torsen LSD does not have any clutches correct, and only has gears so it doesn't need a gear oil with any friction modifiers correct?
04-12-21, 02:47 PM
#27
Pole Position
Ok 👍 thanks for the response!
04-12-21, 09:04 PM
#28
Tech Info Resource
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Motul Gear Competition FF 75W140 - (FWD Transaxle, AWD, and RWD Applications)
Motul 300 75W90 N/S - (FWD Transaxle, RWD)
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MileHIFcar (04-12-21)
04-13-21, 09:47 AM
#29
With the exception being the OS Giken spool. Use Giken's stupid expensive oil, or one of the recommended oils from their list and you need do nothing with friction modifiers. Here are the current alternatives:
Motul Gear Competition FF 75W140 - (FWD Transaxle, AWD, and RWD Applications)
Motul 300 75W90 N/S - (FWD Transaxle, RWD)
Motul Gear Competition FF 75W140 - (FWD Transaxle, AWD, and RWD Applications)
Motul 300 75W90 N/S - (FWD Transaxle, RWD)
04-15-21, 10:23 AM
#30
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https://torsen.com/tbr-lube-friction-modifier/
Many modifiers / additives are sold specifically for Torsen units, which I would only use or add if I were using a regular basic gear oil..
The OEM specific LSD gear oil,like Toyota's is specially formulated. (Likely with a modifier)
Joe Z
Last edited by Joe Z; 04-18-21 at 02:43 PM.