This is a step by step DIY video on how to change the front and rear differential fluid on a 2007 V8 Toyota 4Runner.

What you will need:
➡ 5 quarts of 75W90 fluid (1.5 qts for front diff and 3.2 qts for rear diff)
➡ New crush washer for drain and fill bolts
➡ 13mm socket to remove front diff cover plate
➡ 10mm hex bit socket to remove front diff drain and fill bolt
➡ 24mm socket to remove rear diff drain and fill bolt
➡ Ratchet
➡ Torque wrench
➡ Breaker bar
➡ Fluid pump
➡ Drain pan and shop towels
➡ PB blaster or WD40