Differential Fluid
Shop Cost
~$120
DIY Parts
~$25
You Save
~$95
Tools needed (one-time, if you don't own them)~$110
Tools Required (4)
Socket/wrench set
Drain pan
Fluid pump
Allen key for plugs
Parts & Consumables
Differential fluid
Pro Tip Remove fill plug FIRST.
🚗 Vehicle-Specific Notes
Ford F-150
8.8 rear: 3/8 square fill/drain plugs. 75W-140 with friction modifier for limited slip.
Extra tools: 3/8 ratchet (for plugs)
Toyota
Tacoma/4Runner: 10mm Allen fill and drain plugs. GL-5 75W-90.
Subaru
Rear diff: 23mm fill/drain. Front is part of transaxle. 75W-90 GL-5.
Chevrolet
10-bolt/14-bolt: fill plug is 3/8 square drive. Check for limited slip additive.
Jeep
Dana 30/35/44: rubber fill plug or Allen. 75W-140 for Dana 44.
Extra tools: 3/8 Allen key
❓ Common Questions
What tools do I need for a differential fluid?
You need 4 tools: Socket/wrench set, Drain pan, Fluid pump, Allen key for plugs. Parts required: Differential fluid.
How much does a differential fluid cost DIY vs shop?
A shop charges approximately $120. Doing it yourself costs about $25 in parts, saving you $95.
How hard is a differential fluid to do yourself?
Rated Easy (2/5 difficulty). Typically takes 30-60 min. Remove fill plug FIRST.
How often should you do a differential fluid?
Recommended Every 30-60K mi (approximately every 50,000 miles).
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