Use original honda coolant. It already comes pre-mixed.
For a simple drain and fill, a gallon (a jug) is typically all you need.
January, 19, 2011 AT 11:28 AM
Alright thanks but I need to replace the radiator and when I am at it replace the thermostat also. So I only need a gallon? Thanks
January, 20, 2011 AT 12:04 AM
Yes a gallon should be sufficient enough. If you are a bit worried and want to have a spare jug of coolant kicking around, you can get two. But typically one jug will be enough for a radiator replacement.