![]() ![]() They are both Hybrid Organic Additive Technology (HOAT) coolants as G-05 is, but Cool-Gard and Cool-Gard II are not G-05. John Deere Cool-Gard and Cool-Gard II are NOT G-05.In regards to John Deere Cool-Gard and Cool-Gard II. I was happy this chemical engineer had the time to chat with me through e-mail. I have been having an interesting e-mail conversation with a John Deere chemical engineer. 6 years/6,000 hours is different than the manual's interval and must require monitoring and SCA additions to achieve? Even though it says its back compatible, I wonder if a complete flush should be performed if switching over. I wonder how this formula falls out regarding formulation.still G05? If this costs more, I would think the regular stuff is still awesome for pre EGR engines. I wonder if they will phase out the regular Cool gard? But, they often skew their "test results" (table) by comparing them to obsolete and/or products not suitable for the application. John Deere seems to provide great maintenance products under their name and I imagine this is no exception. ![]() They also claim it is SUPERIOR for all other coolant systems. The brochure also shows that this formula change seems to be aimed at the new,hotter running EGR engines much like the CJ oil is. It states: "we have replaced the nitrite additive with three organic elements". You state "It appears to be chemically identical to the original Cool-Gard." The problem with msds and/or ingredient lists is that they seldom show everything. Regardless, I still drain the radiator and overflow tank and refill both every couple of years. Other than color and longer service life, I am not sure what else changed especially in regards to getting longer service life out of it since both are chemically identical. Both contain Bitrex to keep the pets and kids from drinking it. I wish they had kept to color the same.Ĭool-Gard II is compatible with original Cool-Gard. Cool-Gard II is more of an amber/green color. Original Cool-Gard is a nice green color. Sodium Tetraborate Pentahydrate Inhibitor 1 (yes it is now listed as one ingredient).Here are the original Cool-Gard ingredients. It appears to be chemically identical to the original Cool-Gard. I needed to top off a vehicle I had converted to John Deere Cool-Gard (G-05) over a year ago so I stopped at a local John Deere dealer to get some. ![]()
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