Shell Spirax 80W-90 GL5- what can I use instead

[bebop86]

on my cub cadet volunteer- the manual says to ONLY us the shell spirex gear oil but can not find it anywhere in quart sizes- do I have to use this oil or will any 80/90 GL5 work- thks for the help

 

[RickB]

Anything that says 80w-90 GL5.