Red Line 58504 Superlight Shockproof Gear Oil, 75W90-1 Quart Bottle
- Film thickness greater than an SAE 75W90, yet low fluid friction like ATF
- Used in low-power dog-ring racing transaxles with moderate to low load, qualifying, etc.
- Popular in British F3, Euro F3 and Star Mazda racing gearboxes for ultra low drag