Kroon Oil Classic Gear EP 80

SAE 80 mineral gear oil for classic manual gearboxes (API GL-4)

Kroon-Oil Classic Gear EP 80 is a mineral, medium EP SAE 80 gear oil for the manual gearboxes and other transmissions of classic vehicles. It is part of the Classic Oils range.

Kroon-Oil describes it as compatible with classic seals and rubbers.

Key properties

• Grade: SAE 80, monograde, API GL-4, MIL-L-2105
• Viscosity: 77 mm²/s at 40 °C, 9.5 mm²/s at 100 °C, viscosity index 98
• Density 0.882 kg/l at 15 °C, flash point (COC) 205 °C, pour point -30 °C
• Acid number 1.10 mg KOH/g
• Medium EP treatment with anti-corrosion and anti-foam properties
• Pack: 1 L tin

Choosing the right oil

Choose SAE 80 when the handbook or gearbox plate for an older car asks for an 80 weight GL-4 oil. The grade is thinner than the SAE 90 oils in the same range, which can make a difference to cold shifting in synchromesh boxes. If the manual asks for GL-5 hypoid oil in the gearbox, this is not the right choice, and many older synchromesh gearboxes with yellow-metal parts specifically do not want GL-5.

Match the SAE number and the API level to your manual first; the Classic Gear range covers several grades, so compare EP 80, EP 90 and the other variants before ordering.