It's probably not a good idea to push the changes since there's no way to know by color change which component has been consumed and isn't protecting it's targeted type of corrosion. I'd bet their type 2 (which just happens to be blue) has a lot of long term engineering smarts that goes into their spec'd additive package. 02 honda makes more aluminum engines for longer than just about anybody. A current tech bulletin says their green stuff is fine. Valvoline/Zerex suggests their orange stuff for current asian engines. Interwebs suggest makes the honda blue stuff and might make whatever goes into the oem st fill. So it makes sense honda power sports doesn't use honda automotive branded blue stuff for cost reasons. The honda good book specs "high quality ethylene glycol antifreeze containing corrosion protection inhibitors" 1:1 distilled water. This, and others, suggests it's arbitrary. Antifreeze doesn't have color it's added after the fact. I don't see any ASTM/ASE std for color other than the std for what used to be called "water clear" referenced for antifreeze. Most folks are a bit too inclined to change it too often, much like oil changes. Some types that don't play well together when mixed are "close" to the same color. It's just so much simpler to stay with the original type or do a good flush and start over with a known type and use only that if there is a need to add, which there shouldnt be. Honda auto type coolant is high quality coolant but not familiar with its chemistry to know if it's compatible with OEM long life "conventional" green coolants.Įven many "universal" coolants really should not be mixed with certain coolants. I would be less worried about what version is/was used rather than how well the system was flushed and not different types mixed. The difference between traditional Green and new Blue is that the blue is considered Long Life. Some (most) should never be mixed and can cause some nasty results. Every 05 and later Honda I worked on had Blue Honda coolant. Generally you should NOT mix different colors/types of coolant and the differences are more pronounced than listed a couple posts above.
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