Redline 75W90NS (non-slip) is designed for limited slip differentials and synchro gearboxes so it doesn't have the friction modifiers that make it extremely slippery since they would interfere with their operation.
The concern over GL-5 oils is the sulphur additives that corrode the bronze bushes. GL-4 is more appropriate.
"Beer is proof that God loves us and wants us to be happy" - Benjamin Franklin
Re: norton gearbox oil#62912 03/31/051:37 am03/31/051:37 am