Having trouble seeing the fluid level in the little sight glass? This small bottle of red dye is cheap and will last forever since only a few drops are needed to dye the fluid a red color. JD (Yanmar for sure) uses this at the factory to help identify leaks, but after one or two oil changes the color is gone and the HyGard fluid is very difficult to see.
Part Number: MT3668
Part Price: 3.91 USD
Description: FLUID, HYDRAULIC OIL DYE
(Price may vary slightly, it was $4.27 today 12/1/14 at GFP)