Buyers Products Company Hydraulic Fluid - 12 Quarts (1 Case) - Premium Quality Hydraulic Oil for Heavy Equipment, Tractors & Construction Machinery - ISO 46 Grade - Part #1307010 - Ideal for Hydraulic Systems, Farm Equipment & Industrial Applications

From what I have researched, this seems to be the same type of fluid that came in my plow. I decided to buy the twelve pack case so that I will have it on hand when I get free time and there is no excuse for me to procrastinate when the fluid needs changing. I was also a better price point per quart by buying the case so that helped as well. It's fairly easy to change in my Western MVP3. It's supposed to be changed annually and takes a couple quarts per change so this will last a while. Seems like good stuff at a relatively decent price.