VP Hi-Performance Non-Synthetic 80W90 GL5 Gear Oil is a limited-slip, multi-purpose, hypoid gear oil that meets the latest manufacturer requirements for an API GL5 gear oil. It features high-quality base stocks and unique extreme pressure additives, minimizing wear under high-speed/high-load and low-speed/high-torque conditions. Use Hi-Performance 80W90 GL5 Gear Oil for the following specifications: API GL-5; API MT-1; MIL-PRF-2105E; Mack GO-J; and PG-2 Limited Slip. The limited slip performance of our gear oil reduces chatter and improves traction.