What is GL5 gear oil?
GL-5 Heavy Duty Gear Oil is an extreme pressure, multi-purpose, automotive gear lubricant. Excellent performance for differentials operating under high speed, low torque; and low speed, high torque conditions. It meets SAE, military and commercial specs.
What weight is GL5 gear oil?
Q: What Weight Is GL5 Gear Oil? Most of the time, you will find GL5 oil with a weight of 80W-9. This weight code shows you its thickness in different conditions. The 80 is the oil’s thickness in winter conditions, and the 90 is at 100-degrees Celsius.
Is GL5 synthetic?
Fully Synthetic Gear Oil (GL5) SAE 75W-90.
What is the difference between 75w90 and 80w90 gear oil?
80w90 is the best oil for winter and summer weather conditions. 80w90 has a higher rating than 75w90 due to its tolerance to both cold and hot conditions. But 75w90 is limited to higher temperatures to minimize premature wear and tear. The winner under this category is 80w90 gear oil.
What is 80W-90 oil used for?
Gear Oil 80W-90 is designed for use in differentials, both hypoid and limited slip, manual gearboxes, transfer cases and transaxles in passenger cars, light commercials, 4WDs, trucks, construction, earthmoving and agricultural equipment, where this viscosity grade is required.
Can 75w90 replace 80w90?
Yes. You are fine to mix 75w90 and 80w90 since they don’t contain weird additives that would downgrade the performance of your drive applications.
What is the difference between GL 4 and GL-5 gear oil?
GL-4 is suitable for hypoid gear service when they are under severe service but are without shock loading. GL-5 is suitable for hypoid gear service under severe service and shock loads and not for use in a gearbox.
Is it OK to use 80W-90 instead of 75w90?
Can I use 75w90 gear oil instead of 80w90?
Higher viscosity gear oils can tolerate higher temperatures than lower viscosity gear oils. 75w90 oil provides maximum protection to gears against wear and tear. But 75w90 gear oil becomes clumpy at lower temperatures and downgrade the performance of the gears. The best option under this circumstance is 80w90 gear oil.
How do I choose gear oil?
As a general rule high viscosity oils are best for low speed, loaded gears with a rough surface. Higher viscosity provides a thicker film, higher wear resistance, and less deformation of the gears as time goes on. Low viscosity oils, on the other hand, are best for high speed systems with lower load.
How do I know what gear oil weight to use?
Heavier weight, or higher grade oil is more viscous and therefore thicker as it flows between the gears. Light grade oil is ideal for small, fast, polished gears under a light load. Heavy grade oil is suited for large, slow, rough gears under a heavy load.