Rear Differential Fluid oil change??

I have 2018 Tundra Sr5 4x4. And my current mileage is 13,000 miles. When should I change my rear differential fluid? In owners manual I think it says change at 15k. When did you change your’s??

 

15k??? That seems weird
Can’t remember for sure but it’s like 30k for towing and 60k otherwise.

 

15k-20k miles on my 2010 cm 4x4. On my 17 CM 4x4, I plan to change them every 20k or every other year. I’m running 4.88 nitro gears on front and back, so I had to change it twice in the first year. I think that driving conditions, such as, terrain, usage, mileage per year, etc., will ultimately determine how often the oil needs to be replaced.

 

Oh ok I didn’t change any gear ratio. Everything is stock.

 

I love these types of questions. It tells me you want to keep the truck for a long time.

I just got done changing a rear wheel bearing last fall. To do that you need to pull the axle. The diff oil that was coating the axle looked as good as new oil. I decided to not touch the differential fluid.

I just got back from a 1200 mile trip. I may change it when I get to 200,000 miles in a couple of years...or not.

Unless you drive the truck thru water submerging the axles, there is not much to worry about.

 

With stock I would still change it out every 20k-30k mile, and or every other year depending on your driving situation. As a rule of thumb, I try not to have any of my fluids in my vehicles go for more than every other year. But, I do take my 17 Pro off-road and I tow with it as well. So, I do change it much more often than usual because I plan on keeping the truck for, as long as, I can.

 

30k

 

I've got Red Line oil sitting in the garage. I'm at 47,500 miles right now. And will do it between 50k and 60k. Rear and front diff. Transfer case too.

You didn't ask but I'll be doing the transmission fluid/oil then too.

 

Did mine at 39k. First change. Looked cleaner than Tacoma's at 30. Most trucks you might change at 100 and you have pull diff cover to do it. Toyotas are only ones I have owned with drain plugs.

 

So I might be good for another 7-8k. I am at 13,000 miles right now. How much it usually cost from dealership?

 

Not sure but it’s honestly super easy to do. Drain, replace drain plug washer, and fill.

 

Yeah I saw video online. I will give dealers to take care of it until 25k then I will start doing experiments lol