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 ...
SidecarFlip's avatar
SidecarFlip
Explorer III
Jun 30, 2018
Differentials and transfer cases take hypoid oil. I change mine when required. Auto transmissions get change to, but not flushed. I hear it's the flushing that causes issues.

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