[rotorwrench]

I am familiar with the agri-business here in the US since my family is still involved in farming but don't know a thing about Australia's agricultural or farming business. The stuff is stocked largely in areas where corn is produced here in North America. The product is used by owners of equipment that was not produced by John Deere as well but there are even other companies that make a similar urea based lubricants here.

If similar products are produced in your region, you might look into those products. It's bound to save a lot on shipping.

Leaky steering boxes can generally be repaired with a new bushings or sometimes with an o-ring, new gaskets, or new seal but the old model As used the W600 oil which is similar to SAE-140 gear oil. It's some pretty thick stuff. With old Fords, it boils down to how fast it leaks all the lubricant out since they were not completely oil tight when new.