Valvoline 75w-90 Synthetic Gear Oil

I’m looking at using Valvoline Synthetic 75W-90 for the rear diff and was planning on using it for the transfer case as well as the front diff. Toyota calls for a different lubricants for these components but so many seem to use the Valvoline or other aftermarket brand equivalent. Has anybody run another brand for a while and not had any issues. Should I just spring for the Toyota brand lube and call it a day. The fact they come in a bag… ease of use is the biggest selling point for me more than anything.

 

There are other long threads on this. Seems majority of people are not running the Toyota liquid gold in xfer case. I have the Valvoline in front, rear and xfer. Ran Amsoil severe gear in my taco for 200k and still have it with no issues.

The bags are great and so much easier than pump.

https://www.4runners.com/threads/poll-do-you-use-toyota-transfer-case-fluid-or-other.33474/

 

Toyota 75W here

 

Good stuff, I’m running in all 3 gear boxes. Love the bags.

 

Redline MT-LV 70W/75W in my transfer case right now. Have also used Ravenol MTF-3 75W. Both excellent.
That being said, many will tell you the 75W-90 will work just fine.

 

Any off the shelf 70/90 gear lube will work just fine in the diff and transfer case.

 

Redline in all 3. It’s not as much the brand of fluid but the frequency that you actually change it.

 

Message intended for OP. Agree to run Ravenol MTF-3 75W (GL-3). DO NOT use normal 75W-90 (GL-5), will eat away syncro ring in transfer case overtime. 75W-90 is for differentials.

 

Can you quantify ‘over time’? I’ve read some interesting feedback on this fluid debate.

 

I’ve been using Amsoil fluids for years

 

Sorry I didn’t watch this video close enough. Car Care Nut specified GL-3/GL-4 requirement only applies to manual transmission. But this guy has very good info about everything Toyota.

https://youtu.be/3le9ZT5HUlk?si=HhUon0gM0_SOmT8O

 

Some of you might want to review this thread before choosing which oil to use...

The transfer case is dead! Long live the transfer case!!!! | Toyota 4Runner Forum [4Runners.com]

 

I highly doubt that had anything to do with the oil used. Many other have used it without issues.

 

I’ve come across an official response from Toyota via email where they said to use 75w-90 in the TC. It’s posted in one of these threads.

 

I poured my Mobil 1 in a gallon jug and used transfer pump. A lot easier than multiple bottles me. One gallon jug will do front and transfer and another 3.5 qts in rear.