Gear Oil GL-5 80W/90 4ltr

Hi-Tec GEAR OILS are superior GL-5 gear oils designed to provide: Excellent Thermal Stability, Much Improved Oil Seal Life, Much Improved Durability (Gear Surface Life), Much Improved Corrosion Protection to Yellow Metals under both wet and dry conditions.
All of these improvements overcome the growing concerns of the gear manufacturers (OEM’s – Original Equipment Manufacturers), vehicle and fleet owners relative to these performance areas when operating with the former generation of conventional hypoid extreme pressure drive train lubricants. Hi-Tec GEAR OILS are specified irrespective of service severity, for the lubrication of car, truck and tractor differentials and other final drives, transfer and steering gearboxes and manual transmissions. Special oxidation resistant paraffinic base oils combined with high performance extreme pressure (EP) additives are formulated in Hi-Tec GEAR OILS to ensure long service life to transmission drive lines.
CHARACTERISTICS THERMAL STABILITY.
Hi-Tec GEAR OILS provide protection against the formation of sludge, oxidation and carbonaceous deposit build-up and excessive viscosity increases, thereby ensuring long service life of transmission components. Thermal Stresses on gear oils in modern high performance transmissions have increased due to the following:
Change in vehicle aerodynamics
Wider use of driveline retarders
Increased “Power Density” for transmission and rear axles
Extended slow speeds and high loads
Higher ambient temperatures
Higher horsepower
Extended warranties/reduced maintenance etc.
Excessive heat build up can occur (up to 1800C), resulting in oil degradation and increased friction and wear.