Front/rear differential and transfer case

Okay guys I'm asking you guys cuz you guys are the pros but please don't say there's threads that talk about this and my answer is in one of the threads yeah I've read them all it's just a bunch of guys going back and forth back and forth back and forth about what they should use and what you should use and what you can use and what this guy said with that guy says I want to know legit what you guys are using for front and rear and transfer case thanks in advance guys I appreciate it

 

We refer you to those other threads so we don’t have a bunch of these conversations with everyone arguing. I used

front/rear diff

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

75w-90
Transfer case Ravenol 75w

 

Used fry oil and bacon grease. Does wonders. Doesn’t smell bad when you change it.

 

Is the Ravenol better for faster 4X4 switching? My 2001 goes into 4X4 in seconds in sub-zero weather consistently with the cheap Tractor Supply oil that I dumped in. My 2018 takes f o r e v e r with the factory lube and I don't want to make it worse.

 

I heard Ravenol is thinner and has additives for gears or some kinda mumbo jumbo. Toyota used 75w, so I used 75w.

 

I used Amsoil severe gear

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

75w 90 in the diffs.
Toyota 75w in the transfer, yea it wasn't cheap but made me feel all fuzzy being OEM

 

Does it actuate pretty fast in colder temps?

Sometimes I need to use 4x4 at intersections or stoplights and it takes about 10 seconds to engage (or three attempts) which seems like an eternity.

 

When was the last time you changed the oil in the transfer case?

 

It's original, about 40k miles.

 

I did my first change at 60k. When changing into 4Hi, your truck should be moving. I think it may switch over while still, but I’m always moving when I hit the switch. Switches right over. 4Lo is where you should be at a stop, in neutral.

 

I’ll buy some punctuation plz…

 

Okay thanks Blue ribbon I appreciate it

 

Lol, so you read all the threads with people going back and forth about what they use and recommend and decided to start another one?
Under 2014 75w90 all three
Over 2014 75w85 or 75w90 in front and rear and 75w in the transfer case. The only actually approved fluid is Toyotas fluid, part number

$94 08885-81080 Toyota Genuine Transfer Case Gear Oil LF 75W 1 Litre 08885-81080

08885-81080. Others on the forum have also used Ravenol 75w, Royal Purple Syncromax, Redline LV, and even regular old 75w90.
Your thread will now be one more of these same exact threads with the same exact information regurgitated over and over again.

 

This is always very simple:

1) Read the manual.
2) Do what it says.

Dan

 

So we can have another one where everyone goes back and forth. Brilliant! Guess I’ll add my same blurb to this thread that I posted in all the others.

I am on team 75W for 2014-2021 because that is the proper weight spec’d for the new and entirely different transfer case that went into the Tundra in 2014. I read a ton of stuff on BITOG forums and found that 75w90 is 3-4x thicker at operating temp than 75W. Have people run 100k with the wrong weight oil and been ok? I suppose so. But my plan is to keep this truck far longer than that, so I’m sticking with what is spec’d in the manual. And unlike engine oil, the 2014-2021 transfer case does not have an acceptable range of oil weights listed in the manual.

I did use Ravenol because it’s cheaper. My thinking is that the correct weight matters more than the brand.

If you have your drain and fills done at the dealer, you should expect that they are using the cheapest bulk 75w90 for both diffs and TC they can find, even if the service order has the OEM part numbers (and prices ) listed.

 

I use RedLine 75w90 front and back and 75w85 for the transfer case. Changed at 40K and no drop in mileage or issue switching in/out of 4. I do try to switch it in/out of 4 one week even if it's just in a gravel parking lot at work. It feels like it shifts slightly faster than the original oil.

 

Amsoil severe for diffs.
Genuine Toyota oil in a tin can for transfer case.

 

Shell GADUS NLGI-00 for diffs.
Kubota SUDT2 in non-biodegradeable gallon jugs for X-fer case.