How do I know what gear oil to use?
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.
Which oil is best for gearbox?
Gear Oils (EP)
- Duolec® Industrial Gear Oil was formulated specifically for lubricating gearboxes.
- Duolec® Syn Gear Lubricant is formulated with 100 percent synthetic base fluid to ensure excellent high- and low-temperature performance.
What gear oil is the thickest?
The SAE grading system indicates oil viscosity in simple numbers ranging from the thin oil (10) to the very thick oil (140 or above). 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.
Can you use engine oil in a gearbox?
Gearbox oil has a higher viscosity than engine oil and this is because it better protects the gears, ensuring you have a smooth transition between them. Therefore, you cannot use engine oil in your gearbox.
Can I use regular gear oil in my lower unit?
So, can you use any old gear lube in your marine lower unit? If you want the best protection possible, and want your lower unit to last as long as your boat, then the answer is no. Consult your engine’s manual and look for the proper marine gear lube for your application.
What is the difference between 75 90 and 75W-140 gear oil?
A 75W-90 will be thinner at higher oil temperatures than a 75W-140. Both are the same thickness at lower oil temperatures. The 75W-140 is said to have a wider viscosity range – when more accurately it would be a wider temperature range.
What is difference between gear oil and engine oil?
gear oil, you may be tempted to think they’re the same thing, but they’re not. Gear oil is specifically designed to protect, lubricate, and cool gearing systems. Engine oil lubricates the bearings and protects your car’s engine from the additives in gasoline.
Why is gear oil important in a car?
One product that is essential for the normal operation of these vehicles is gear oil. Gear oil is a lubricating motor oil made specifically for transmissions, differentials, and transfer cases in cars, trucks, and some industrial machinery. It has a high viscosity, or thickness, to ensure maximum protection of essential moving parts.
What kind of oil should I use for a low load gearbox?
The benefit of rust-prevention gear oils is that they extend the life of the gears while allowing the gears to run at high temperatures. This gearbox oil is best used in low-load gearboxes.
When to change the oil in a gearbox?
Gear oil changes as needed are critical during the first few weeks or months of operation of gear cases. Rather than setting arbitrary change intervals, manufacturers should regularly monitor by oil analysis the condition of the oil to determine stability of the lubricant.
Which is the best rating for gear oil?
In surveying this data, we’ll often see viscosity referenced not in terms of ISO grades, but rather the American Gear Manufacturers Association (AGMA) grade or occasionally in Saybolt Universal Seconds (SUS). The AGMA grade is a numeric rating that correlates directly with gear oil viscosity grades.