2005 Toyota Tacoma 4x4 4cyl. Owner's manual specs SAE 90 for the rear differential. This fill was in the rear end for nearly 30k. I picked Royal Purple 75W-90 specifically for its "near" SAE 90 upper viscosity. The RP website used to have it listed around 21cSt, but now has it around 19cSt. The Blackstone report said the viscosity was within allowable limits, but I think this oil has sheared pretty bad. Wear looks pretty good though. It was replaced with Redline 75W-90.
ALUMINUM 1
CHROMIUM 1
IRON 121
COPPER 0
LEAD 0
TIN 0
MOLYBDENUM 131
NICKEL 0
MANGANESE 3
SILVER 0
TITANIUM 0
POTASSIUM 0
BORON 104
SILICON 25
SODIUM 2
CALCIUM 35
MAGNESIUM 1
PHOSPHORUS 2289
ZINC 18
BARIUM 0
SUS Viscosity @ 210°F 71.3
cSt Viscosity @ 100°C 13.29
Flashpoint °F 365
Water % 0
Insolubles % TR
ALUMINUM 1
CHROMIUM 1
IRON 121
COPPER 0
LEAD 0
TIN 0
MOLYBDENUM 131
NICKEL 0
MANGANESE 3
SILVER 0
TITANIUM 0
POTASSIUM 0
BORON 104
SILICON 25
SODIUM 2
CALCIUM 35
MAGNESIUM 1
PHOSPHORUS 2289
ZINC 18
BARIUM 0
SUS Viscosity @ 210°F 71.3
cSt Viscosity @ 100°C 13.29
Flashpoint °F 365
Water % 0
Insolubles % TR