What is the difference between gear oil 75w90 and 80w90?
1 Answers
75w-90 and 80W-90 gear oils differ only in viscosity. Below are the viscosity specifications for these two gear oils: 75w-90 viscosity: The kinematic viscosity of 75w-90 gear oil at 100°C is 4.1mm2·s, and the maximum temperature to reach 150Pa·s is -40°C. 80W-90 viscosity: The kinematic viscosity of 80W-90 gear oil at 100°C is 7.0mm2·s, and the maximum temperature to reach 150Pa·s is -26°C.