Differential fluid

2020 TOYOTA TACOMA
120 MILES • 2.7L • AUTOMATIC
Avatar
FLOATR925
  • MEMBER
  • 139 POSTS
Which type is best for my rear differential .I see different types Hyp ..I can't pronounce it ..type, an the synthetic type like redline an mobile 1 .I know the actual toyota ..dealer differential fluid is like 50 bucks a quart too .mobil 1 is 20. .I would like to get the proper type without busting the wallet .I think it takes a little over 3 quarts ..
Thanks
Aug 5, 2026 at 6:39 PM
Advertisement
Avatar
FLOATR925
  • MEMBER
  • 139 POSTS
Hypoid Gear Oil LT 75W-85 GL-5 ..what I found ..
Though I see mostly synthetic 75w 90 ..
Aug 5, 2026 at 6:44 PM
Avatar
JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,205 POSTS
  • ASE Certified Mechanic
Hi:

The best would be exactly what the manufacturer recommends. I checked all model Tacoma trucks, and they all call for exactly what you said: LT75W-85 GL5. See pics below.

Certainly, a synthetic fluid will not hurt anything, but I do suggest going with the recommended weight.

Let me know if you have other questions.

Take care,

Joe

See pic below
Image (Click to enlarge)
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Aug 5, 2026 at 8:04 PM
Avatar
FLOATR925
  • MEMBER
  • 139 POSTS
Thanks..but whick type - ..synthetic or Hypoid? I see mobil 1 synthetic says 75 w 90 ..is thay ok vs recommended 75 w 85
Aug 6, 2026 at 6:16 AM
Avatar
FLOATR925
  • MEMBER
  • 139 POSTS
I see redline has the Hypoid synthetic ..an Mobil 1 is just synthetic ..would redline be more better
Aug 6, 2026 at 6:24 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.