I need to change the coolant in my tractor. Per KUBOTA it must be changed every two years to protect the cooling system. I am at the two year mark and 300 hours on the tractor. Seems like a waste, but I am sure it is good insurance to change it due to it still being under warranty. I would buy from my local KUBOTA dealer but they do not carry it and just said to use any old green antifreeze. Well I am a little picky and don't want to spend money on repairs from using the wrong coolant. Here are the specs from the KUBOTA coolant. (https://www.colemanequip.com/wp-content/uploads/70040-0L014.pdf) So I need a Ethylene Glycol-based phosphate coolant to meet Asian vehicle application and does not contain any silicate, borate or nitrite. Any suggestion on what to pick up at Walmart, Auto Zone, Advanced Auto or O'rilleys which is the only options in out area. I would order it but I am sure KUBOTA does not make their own antifreeze and I can not justify $40 a gallon delivered. Any suggestions?