I want to change both the Gearbox and differential oils. I have a few questions someone may be able to answer:
- Is the lube the same for both Gearbox and Differential?
- I see it is Shell Spirax S5 75w/90; are there approved substitutes?
- I can't find this oil in the US easily. Any advice where I can buy it?
- What volume of lube do each units use?
- Does anyone have procedure for changing the Gearbox oil?
Thanks!