G'day,
I was just about to pop down to my local Repco and pick up a GL5 (75w90, I believe) for my diffs, and thought while I was there, I'd get some oil for the gearbox & transfer case for my 2010 VDJ79 LandCruiser.
My Haynes manual specifies I can use a GL5 OR a GL4 of the same viscosity, However, your database only specifies GL5 for the diffs and GL4 for the gearbox. Was just wanting some clarification, I'm hoping the gl5 is cross-compatible for both the diff and gearbox so I only have to buy one type of oil for both applications, However, I know these applications can be very particular with oil grades and viscosities so I'd rather get it right the first time.
Cheers.
Thomas