The various different types of gear oil confuse me. What does GL1, GL3, GL4, and GL5 etc. mean?11th April 2013
Limited Slip Differential15th January 2018
Millers Classic Green Gear GL1 oils will be the closest to the original specification and is available in the heavier viscosities (90 and 140). Use for lubrication of transmission systems which preclude the use of extreme pressure (EP) types, specifically for vintage applications.
Click these links to buy Millers Classic Green Gear Oil 90 GL1 or Millers Classic Green gear Oil 140 GL1, or to see our full range of Classic gear and transmission oils, please visit our online shop.