Forum Discussion

thehippie's avatar
thehippie
Explorer
Jun 30, 2018

about differential and transfer case fluid replacement

My 4Runner 4wd is already 122000 miles and differential and transfer case fluid not changed. It still drives like a dream. I heard that if you change the fluid it will hurt your car more since ...
wolfe10's avatar
wolfe10
Explorer
Jun 30, 2018
I agree, change fluid and filter if there is one. Do not flush.

BTW. this advice is the same that Allison has-- no flush!

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