What is hypoid gear oil?

Hypoid gear oil is a special type of lubricant that is used in hypoid gears, which are gears that have non-intersecting axes and intersect at an angle. Hypoid gear oils are designed to provide extreme pressure (EP) properties, as these types of gears tend to experience a lot of sliding motions between the teeth.

These oils have high load-bearing capacities, as well as good shear stability, thermal stability, and resistance to oxidation. They also have low foaming tendencies and high anti-wear properties.

Hypoid gear oils are commonly used in automotive rear axles and other industrial applications that involve hypoid gears. They come in various viscosity grades, and it is important to choose the right grade according to the manufacturer's specifications.

It is also worth noting that hypoid gear oil is not interchangeable with other gear oils, such as those used in manual transmissions. Using the wrong type of gear oil can cause gear wear, noise, and reduced performance.