JD Hy-Guard compatibility....??

[bswiv]

Friend gave me about a gallon each of John Deere Hy-Guard hydraulic fluid......low viscosity and regular.......

Not wanting to waste it I'm wondering whether I am safe using it in my Cat D5G for the hydraulic system......or in my M8540 Kubota's hydraulic system?

What is it compatible with?

 

[rScotty]

Pretty much all trans/hydraulic fluids are completely compatible. They have to be when there are so many hydraulically-driven attachments, implements, and rentals.
Hy-Gard is top quality. Look it up. They used to publish a table of other fluids that met the same quality specs.

 

[Cat385B]

A gallon? Toss it in with the used oil. Why risk a contamination/compatibility issue over a gallon or two of oil?

 

[Tx Jim]

JD Hy-Gard & Kubota hyd oils are very compatible. There's no risk involved mixing the 2 brands of oil. I utilize Hy-gard in my Kubota M7040 transmission case

 

[dodge man]

My tractor is suppose to use the low viscosity Hy Gard. They sold me the regular kind for my first change and the low viscosity for the second. I didn’t catch it until the second change so mine is a blend, no problems.

 

[MHarryE]

Not sure of the age of your Cat but are you sure it doesn’t use TDTO - Cat’s Transmission and Drive Train Oil, which has different additives than ag hydraulic oil.