The easy way to be safe on this one, is to run into your closest new holland dealer, and read the side of one of their coolant bottles, and see what specs it meets... and then buy it.. or if you can find an equivalent or superior product elsewhere cheaper, go for it.
Thoug I can't say for sure.. I imagine all the major tractor companies antifreezes are meeting each others specs. For instance, the NH hyd oil.. 134d stuff.. if you read the bottle it meets JD 303 and the new hygaurd spec.... Likewise, the jd fluid meets the NH spec... etc, etc
Soundguy
Soundguy