Another Transfer Case fluid post. (Liqui moly MTF 5100 75W)

Liqui Moly MTF 5100 SAE 75W works. I got 2 quarts at Napa for $16 per bottle.

 

Not sure how this holds up to Ravenol, but I’d personally only use Ravenol.

 

Both are german brands and make very good lubricants. Just putting this out there because it seems to be more readily available.

But hey, it's your truck, so put in what you're comfortable with. I personally changed the diffs to supertech 75w90 syn and liquimoly 75w for the T Case at 30K miles.

 

+1 Ravenol. 75w. Get it on Amazon.

 

Lol eff it, be part of the herd and just use Ravenol.

Anything else will not work.

 

I run Redline.

 

Another good choice.

 

There's nothing really special about Ravenol, the VOA on it shows it's not close to the Toyota fluid. People just use the Ravenol because it's the only fluid that says it can replace the exact part number of the Toyota fluid along with a ton of other OEM fluids which has always made me suspicious of it since you wouldn't want to use those other OEM fluids in your transfer case but if Ravenol can replace all those other OEM part numbers then that would suggest that those OEM fluids would also work. I personally have just stuck with the OE fluid since I dont change it often enough for the added cost to really make much of a difference.

 

If it's GL4 certified and 75w per the manual, I have no problem with it. There have also been people on record saying that dealers have been putting in 75w90 in the T cases with no issue. So theses straight 75w fluids like ravenol, redline and liquimoly can't be far off from the toyota branded one.

People on this forum would flip if they saw what I was putting into my truck lol. API certs and shorter drain intervals just don't cut it for the majority of people here I guess.

 

My dealer puts bulk

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

75W-90 in both diffs and any Gen 1, Gen 2 or Gen 2.5 Tundra transfer case. ‍

 

If we go by how The forum distinguishes the generations of Tundra that would be correct. Gen 2.5(14-21) the transfer case actually changed and that's when the spec from 75w90 changed 2013 and below take 75w90 per Toyota.