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Discussion Starter #1
Hey guys,

Start off by saying I don't know anything about this stuff.
I know none of the fluids in these things have probably ever been changed & I'm up around 166k miles.

I've been reading posts, but am more confused now as to how & what.

Start off with car 97 4wd, 2dr, manual gear box.

Regarding the differential this is separate from everything else correct and can use this oil Red Line 57904 (75W90) Synthetic Gear Oil - 1 Quart https://www.amazon.com/dp/B000CPCBF0/ref=cm_sw_r_cp_apa_7ekSxb7FEHTPX
And should use this diy tutorial to replace?
https://youtu.be/PTj83tjHhHE
And 1qt oil all that is needed?

Transfer case & gear box are one and the same? And can use this diy tutorial https://youtu.be/DunMgAgl7qQ

And this oil to change? Red Line 50305 MT-90 75W90 GL-4 Gear Oil - 1 Gallon https://www.amazon.com/dp/B002INX20C/ref=cm_sw_r_cp_apa_OIkSxbNTDNQP5
Will need 5 liters or quarts?


Thank you

Best, Joe
 

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You want Redline 75W90 NS for everything. The NS is very important for the transaxle.

Manual states 1 litre for rear diff and 5 litres for front transaxle. I got slightly more than 1 in the rear and slightly less than 5 in front.
 

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Discussion Starter #5
Thanks guys for the replies. So confusing.
SlimJim, the manual doesn't state NS?
On amazon when I click this redline oil, it states this fits my car & for use in differential & transfer case Red Line 57904 (75W90) Synthetic Gear Oil - 1 Quart https://www.amazon.com/dp/B000CPCBF0/ref=cm_sw_r_other_apa_ndAXxbGCM08KJ
It is GL5, which is what manual states. Guys think it's safe for both?
I'm going to be getting clutch & 4th gear done soon & want to definitely get the best fluid possible.




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Redline makes things confusing with their labeling.

The 75W90NS is their std oil; the 75W90 contains an additive for LSDs so is slipperyer, not good for gear changes.
Toyota state, for the 4.1, GL4 or GL5, but really, as it is a combined g/box and diff, it need a GL4 and GL5 compatible oil, ie a GL5 that doesn't contain any additives that damage synchros in some g/boxes.

Having read lots when going to do mine, I went for Motul Gear 300 75W90, a fully synthetic. I looked at Redline too, but there were a few reports of damage on race cars.
 
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