Front Differential Fluid/Transfer Case Fluid

I see plenty of recommendations for the Rear Differential Fluid (LSD) for Lucas 80w90, which I purchased.

Upon looking at the Owners Manual, it calls for 75w90 in the Front Differential Fluid and Transfer Case.

I searched around and didn't really find a recommendation. Anything to suggest for a fluid I could perhaps get a gallon of so I can do the Front Differential and Transfer case? Should I go with the Lucas 75w90 Synthetic? Or there's some Valvoline SynPower VV975 available locally for cheaper.

Thanks

 

I bought this kit for the front/rear differentials and transfer case.
https://www.blauparts.com/toyota-tundra-transfer-case-differential-fluid-change-kit.html

 

Make sure you can get that fill and drain plug out.

 

My truck has had mobil1 its whole life, so thats what i used, but i had to use a hose for the front diff. Oil in bags was much easier on a buddies truck.

thanks to herb from TS.


I still need to order the lexus plugs, my truck will probably be due for fresh juice this summer.

 

Just make sure it says "meets specifications" and not "recommended for". The latter means it does NOT meet specifications.

 

I'm using this Valvoline

$39 75W-90 GL-5 Limited Slip, Ultra Long Drain 500k Miles, Manual Transmission, Gear/Differential Lubricant (1 Gallon)

75W-90 for diffs/transfer case. I have an LSD and so far don't hear anything weird. I stripped the shit out of the transfer case drain bolt so I haven't replaced that fluid yet, but will use this same stuff when I get around to it. Just FYI to be careful if you also need a t55 for the TC drain bolt

 

where does the t55 come in? Do the dc’s have a different tcase?

 

It wasn't the TC looking back now, its the front diff. My drain bolt 'was' a t55. I could fit in a hex now. The last change was over 150k miles ago so maybe they swapped the bolt too? Not sure.

 

Yeah, and replace them with Lexus plugs. Lexus plugs go right in but they don't have the ridiculous 10mm allen that strips out.

Don't have the PN's right now but a google search will find them easily. Only about $60 for both and the Lexus plugs are external removal. Best of luck to you and 75w is fine.

 

1st gen Tundra uses

$39 75W-90 GL-5 Limited Slip, Ultra Long Drain 500k Miles, Manual Transmission, Gear/Differential Lubricant (1 Gallon)

75W-90 in the transfer case, not the low viscosity 75W fluid.

OP, the Valvoline 75W-90 synthetic is a good choice.

 

I've been using the shit from Tractor Supply in my front diff. It's cheap, 'Traveler' brand I think. No issues, at least not yet at 200k, I don't do any off-roading though.

 

Shit, my bad, I never realized this post was in the 1st Gen forum, sorry about that

 

PN's for the Lexus 14mm front diff hex plugs are 90341-24014 drain and 90341-18060 for the fill. Double check the pn's but if you're DIYing the front diff, and you can actually remove the hated 10mm Allen plugs, slap in the Lexus plugs.

Have a good day and donate to charity.

 

I ran into a stuck front drain plug the other day when I was changing all the fluids, never had that happen before. I gave up cause I didn't want to strip it, I sucked out what I could and topped it off. I have a new plug so I guess I'll try and chisel off the old one sometime this week.

 

When walmart is like ‘do you wanna round up for charity, like bish, my truck is 23 years old, I am charity.

 

The front diff plugs are my peeve with Yota. I have to rage about it, it's the same design since 1964.

Meanwhile, Lexus has the sweet 14mm plugs that cost maybe $5 each. The lack of "continuous improvement" is astounding. Anyway, IF you can get the front diff plugs out replace them with the Lexus plugs.

I've cursed the most working on Yota front diffs than anything else, even more than the 4Runner rear shock top mounts. Those 10mm Allen plugs are shit.

Rant over, have a good day and donate to charity.

 

Haha, it's all good, totally understandable. I was able to fit my 1/2" electric impact on it but it didn't budge. I'll try soaking it with PB blaster, then pray.

 

Don't bother with PB blaster. That drain plug isn't coming out, been there tried that. If the fill plug is out just use a cheap transfer pump to suck the old fluid out and pump the new fluid in.

Messy stinky job in a house garage but it's done quickly. And buy the Lexus fill plug to replace the absolutely ridiculous Yota 10mm Allen plug. Have a good day and donate to charity.

 

I had luck with an easy-out on mine:

https://www.tundras.com/threads/wha...-gen-tundra-today.2558/page-1636#post-3219760

 

I've had luck 'shocking' them with heat and cold to remove them. First a propane torch, then flipped a can of electronics duster upside down to freeze it. I hate doing it on aluminum casting though because you can really break stuff if you overdo it.

It's a bad design using a hex 'allen wrench'. I think they all get rounded out at some point.