What the title says.... Lots of info on oils but couldn't find when people change their coolant.

 

Read the manual.

http://owners.honda.com/vehicles/inf.../S2000/manuals

Coolant is usually time based rather than mileage based.

 

We'll Honda says to do it around 100k miles or 10 years whichever comes first. Then after that you suppose to do it every 60k miles or 5 years which ever comes first.

 

Mine is 7-8 year, 57k miles. I know what manual says, but there are many things that owners do and recommend to do differently. Like valve adjustment for example thats recommended here to do at 20-30k intervals. If you Google coolant intervals, some say change it every 30k others every 60k etc.

 

Personally I would do it every 5 years, and 7 years on the factory fill. Honda coolant is some of the best stuff you can run. My car was 7 years old when I bought it and I changed it as soon as I bought the car, looking in the oem rad it was still spotless so the coolant was working well.

 

I think I changed mine at 45k and 65k. No water pump or hose leaks so far (knock on wood).