Gearbox oils are classified by the American Petroleum Institute using GL ratings. The higher an oil's GL-rating, the more pressure can be sustained without any metal-to-metal contact taking place between transmission components.
What weight is GL3 gear oil?
SAE 75W-80
What do gear oil numbers mean?
Gear oil meant for high ambient temperatures is designated by a single number (for instance, SAE 80 or SAE 250). Viscosity of these oils is measured at 212 degrees Fahrenheit; higher numbers indicate more viscous oil.
Can I use GL4 instead of GL1?
Re: Gl4 vs GL1 gear lube I went through this last year working on a friends car and what I came up with was GL4 is a good replacement for GL1. Its got some higher tech stuff in it that helps with wear but not enough to cause issues with 'yellow metals' so its really an upgrade.30 Aug 2017
What is the difference between GL-4 and GL-5 gear oil?
The main difference between GL-4 and GL-5 gear oils is the amount of EP additives. 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.9 Sept 2020
What is a GL-5 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 I use GL5 instead of GL4 gear oil?
Yes, you can use GL-5 gear oil instead of GL-4. The most important fact here is the API GL rating.17 Jan 2022
What is GL3 gear oil?
CHAMPION GL-3 ALL PURPOSE GEAR LUBE is a high quality, moderate duty, extreme pressure, all-purpose gear lube for use in automotive, agricultural and industrial applications. For use where the manufacturer specifies AGMA EP, AGMA 9005-D94, US STEEL 224, Cincinnati Milacron, Extreme Pressure, or GL-3 gear lube.
What is the difference between GL3 and GL5 gear oil?
GL3 is the next level of performance and has very limited applications. Mainly specified for French and Italian (Fiat & Alfa) cars which had very soft synchromesh. GL5 specification is for highly loaded hypoid differentials as fitted to most cars from 1960 onwards.