Rick
Here is a link to a TBN thread on Antifreeze in tractors.
Click here.
Here is a copy of <font color="green"> JD's </font> site on Anti Freeze.
Coolants
John Deere Cool-Gard™ Antifreeze/Summer Coolant gives you ultimate year-round protection for your cooling system
Are you using the right antifreeze/summer coolant?
Not if you haven’t matched the right product to the performance demands of your equipment! Heavy-duty engine cooling systems need special care and protection year-round. Unfortunately, many owners don’t service their equipment’s cooling systems regularly. Or if they do, they may believe that any automotive antifreeze or summer coolant will do the job.
But that’s not true! While most antifreeze/ coolants will prevent freeze-up or boil-over, they don’t perform adequately in heavy-duty machines. They can’t provide the balanced protection your cooling system needs to operate efficiently under extreme pressures and temperatures, and with high volumes of flowing engine coolant. The right engine coolant will protect internal surfaces and components, as well as provide freeze protection and heat transfer properties. Water only is never recommended.
Why choose Cool-Gard over another coolant?
John Deere has specifically engineered a fully formulated, heavy-duty antifreeze/summer coolant to match the performance requirements of our equipment. This is the same antifreeze used in new John Deere machines. In fact, our engineers highly recommend it for use in all heavy-duty and light-duty diesel and gasoline engines, including automobiles.
John Deere Cool-Gard is available in two forms — concentrate, which must be mixed with water for proper freeze protection, and pre-mix (ready to use), which contains 50 percent demineralized water and has a freeze point of -34 ºF. (-37 ºC). Both contain coolant conditioner, anti-corrosion additives, and anti-foaming agents to guard against liner pitting, rust, corrosion, and scaling. Both have a service life of 5 years/5,000 hours.
