Hello I own a honda accord 2000 where can I got to ask a specific question about mixing coolant is the prestone green one and the blue one ?

 

Welcome to Honda-Tech.

When I have googled your question in the past, the consensus was you can mix coolant as long as all coolant is silica free but you reduce the lifespan of the coolant to which ever one has the shortest life. By that, say green has 3 year and blue is 7 year, if you mix green you only have 3 year life of the coolant.