Tranny and Diff Fluid changes

Have a 2019 5.7L w about 80k miles. Mostly easy driving, suburbia so mix of Highway and side roads. Maybe about 300-500 miles a year in 4WD depending on how much snow we get. Suggestions on changing transmission and/or Differential fluid?

 

Drain and fill the transmission. I would service the front and rear diff along with the transfer case. Plenty of how to's on the site. Just get the correct fluid for the transfer case.

It doesn't have to be the toyota 75w, their are options from Ravenol and red line to name a few

 

My dealer told me today that the t fluid in my 21 never needs to be changed. He said I could at 200k if I wanted. Never would have thought and don’t 100% trust

 

changed my trans fluid at 100k. Drain and fill. I use Ravenol for my front, rear and transfer case. Seems to work fine. I'm doing rear at 120k, front and transfer case at 130k

I have a 2014 SR5 just and FYI

 

I’m between 25-30K miles per year, so I do diffs and t-case annually. Trans every other year at 60k.

Too many threads on the procedures to count, so no need to make another one! The oil changes are all very easy on these trucks. Unless you’re completely unmotivated to spend half a Saturday with a six-pack and some very basic tools, it’s not worth what the lube place is gonna charge you.

 

Unless it’s free for life of vehicle that is.

 

Never trust the dealer when it comes to fluid change intervals. Trans fluid should be changed (spill & fill) every 40-50k. 30k if you tow often.