Originally Posted By: J23
My coolant is green. I've called Honda dealer - they said they OEM is blue....
First, when it comes to AF, color is a very unreliable indicator of coolant type and chemistry. So I'd throw that out as the main consideration in your selection.
Second, don't count on the owners manual to give you an accurate indication or complete description of the specific type of AF to be used. Most, including Honda give a vague description like that above stating something like "high quality ethlene glycol". That description includes many many types of AF's.
While Hyundai/Kia is green, for a 2013 would be a Long Life/Extended Life Asian P-HOAT, making it the same as other Asian coolants now. Nissan recently went from a shorter life (~2yrs/30k mi.) green Asian PHOAT to a Long Life Blue same as Honda Type2. Toyota went from a shorter life (~2yrs/30k) Red to what they call Super Long Life now pink.
Mazda FL22, Honda Type2, the new Nissan Long Life and Zerex Asian Formula would all be acceptable equivalents to H/K oem. Another excellent option, if not too expensive, would be full strength Motorcraft Specialty Green, also and Asian PHOAT.
As for the advice regarding using Prestone AM/M, if it was my vehicle it would not be my first or even second choice for the 2013 Rio. It contains the active ingredient 2eha which is a known plasticizer and no Asian oem AF's will use it for that reason. If you want to know more about 2eha in some OAT/Dex coolants like Prestone, the link below does a respectable job of explaining the issues. Especially see section under "Extra Sealing Protection"*
All that said, with a 2013 you shouldn't need to be concerned about AF replacement for quite some time.
*
http://articles.sae.org/11284/