Many equipment packages in the Offshore industry specify transmission type lubricants.

For the lubrication of the most highly loaded gearboxes, such as those found in some cranes and other severe applications, Castrol offers a range of GL-5 specification lubricants.

In certain highly stressed hydraulic systems automatic transmission fluids are often specified due to their inherent high VI and stability. Certain applications employing wet clutches specify tractor fluids with the appropriate anti-squawk additive systems.
Always check your equipment manual and consult with a Castrol Technical Service Engineer to choose the right product for the right application.