GL4 and GL5 gear lube and bronze gears and bushings

[lightninboy]

Check out Case IH Hy-Tran.

 

[Soundguy]

Another utf product..

 

[fortec]

It's the higher level of EP and Anti-wear required for GL-5 performance that generally make those oils aggressive to yellow metals. In actual fact the GL-4 performance tests have not been available for several decades but what many oil companies do is to simply take the GL-5 additive and halve the treatment level to make a 'GL-4'. The lower concentration will give an approximation of the claimed GL-4 performance but without being so aggressive in terms of yellow metal corrosion.

 

[hutchman]

When I changed my front axle oil I used walmart supertec GL5 and the label said the formulation was yellow metal safe. Soundguy already mentioned this one.