What does GL-4 mean in gear oil?

GL-4. Active. The designation API GL-4 denotes lubricants intended for axles with spiral bevel gears operating under moderate to severe conditions of speed and load or axles with hypoid (see note)gears operating under moderate speeds and loads.

What is the GL rating on gear oil?

GL-1: Oil without EP additive. GL-2: Usually contains fatty materials. GL-3: Contains a mild EP additive. GL-4: Equivalent to MIL-L-2105B and is usually satisfied by a 50% GL-5 additive level.

What is GL gear oil?

Gear Oil GL-5 are multipurpose lubricants. They are made from paraffinic base stocks and contain a balanced additive package to provide acceptable market general gear protection and lubricant life.

Can you mix GL4 and GL5 gear oil?

No, GL-4 and GL-5 are designed for different uses.

Will GL5 work for GL4?

You can put GL5 in your diffs (no yellow metals), GL4 in the rest and don’t bother with anything fancy in the gearbox as you don’t really want too good an oil in there to help the syncro’s.

Can you mix gl4 and GL5 gear oil?

Can I mix synthetic gear oil?

Mixing. Indeed, some commercially available gear oils are a mixture of synthetic PAO oil and mineral oil in various proportions. This is a clear indication that synthetic and regular mineral gear oils can be mixed.

What is the difference between GL-4 and GL-5 gear oils?

The main difference between GL-4 and GL-5 gear oils is the amount of EP additives. Sulphur/Phosphorus containing products are used as EP-additive. This additive has the purpose to prevent the occurrence of micro-welds on the gear flanks at the local high temperatures which prevail in EP circumstances (temperatures well in excess of 800℃!)

What is GL oil?

The 80W-90 GL-5 gear oil is typically used in special circumstances . The oil known as 80W-90 GL-5 is a lubricant for the gears in your vehicle. It is used in automatic and manual transmissions, and assists the gears in shifting smoothly.

What is gear oil?

Gear oil. Gear oil is a lubricant made specifically for transmissions, transfer cases, and differentials in automobiles, trucks, and other machinery.

What is gear lubricant?

Gear oil is a lubricant made specifically for transmissions, transfer cases, and differentials in automobiles, trucks, and other machinery. It is of a high viscosity and usually contains organosulfur compounds.