I have a new to me 09 Fit with 131K miles on it . Unknown maintenance history , just what I was told by the curbstoner :/ . Nothing reported in CarFax, but it looks to be well maintained.

I just took a closer look at the coolant and see it looks fresh , but its green. Should I drain and fill with Zerex Asian blue ?

 

Put in what is recommended by Honda or equivalent. The cost of the appropriate antifreeze is fractions of pennies on the dollar compared to the cost of over heating the engine by having a clogged radiator or having to tear apart the dash to replace a clogged heater core.

 

^^^ Agree 100%

 

Change it asap with Hondas radiator fluid or you will mess up your cooling system like I did.

 

Debatable , especially if it was a universal coolant https://www.underhoodservice.com/uni...timate-answer/

I did however put in Honda equivalent ( Zerex Asian blue )