TRUEGARD SYN TRANS 668 55 GALLON DRUM

The 668 refers to an ISO VG 668 viscosity grade, one of the heaviest grades in the ISO industrial lubricant scale. This level of viscosity is intended for heavily loaded, slow-speed industrial gearboxes and enclosed gear drives where a thick film is needed to protect gear surfaces under extreme pressure.

Synthetic base stocks provide superior thermal and oxidative stability, meaning the fluid resists breakdown at high operating temperatures and typically allows for longer drain intervals compared to mineral-based alternatives. They also generally offer better low-temperature fluidity, which can ease cold-start conditions in equipment that sits idle.

Mixing lubricants of different formulations or base stocks is generally not recommended, as it can compromise the additive package and reduce performance. It is best practice to fully drain and flush existing fluid from the system before switching to this product to ensure full compatibility and performance.

The drum should be stored indoors or under cover in a cool, dry area, away from direct sunlight and heat sources. Drums should be kept sealed when not in use and stored horizontally or with bungs positioned to prevent moisture ingress, which can degrade the lubricant over time.

A dedicated drum pump or transfer unit designed for high-viscosity industrial lubricants is recommended, as ISO VG 668 is a very thick fluid that will not flow adequately by gravity alone. Using dedicated, clean dispensing equipment also prevents cross-contamination with other lubricants.