Gear oil is a lubricant made specifically for transmissions, transfer cases, and
differentials in ... API Category GL-4 designates the type of service characteristic
of spiral-bevel and hypoid gears...
NO! They meet the GEAR OIL specifications, not transmission oil specifications.
The API GL-4 and. GL-5 categories do not mention or have anything to do with ...
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Synthetic Manual Transmission Gear Lube meets 75W/80W-90 viscosity
requirements and exceeds API GL-4 performance requirements for many ...
The API category GL-4 for gear oils designates the lubricant as appropriate for
spiral-bevel and hypoid gears in automotive axles. The car should be operated ...
If an API GL-5 gear oil is used in a application where API GL-4 gear oil is called
for, chemical corrosion of "yellow metal" components may occur ...
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 ...
API Service Class, GL 4. SAE Viscosity Grade (Motor Oil), 15W40. SAE Viscosity
Grade (Gear Oil), 75W90. Vis @ 100°C, cSt, 15.6. Vis @ 40°C, cSt, 90. Viscosity ...
Nov 18, 2015 ... Just remember that API GL-4 and GL-5 are gear oil ratings, not transmission oil
ratings. Transmissions have gears and synchronizers which ...