I have a 2550 Deere MFWD loader tractor used primarily in the winter for hay work. Was debating on going with the Amsoil @ $80/5 gal pail or JD Hytrans non synthetic for 50 bucks per 5 gals. WOuld the cold weather performance be worth the extra money? Is there anything in the Deere fluid that might not be present in the Amsoil that I want to be aware of?