Coolant...

[dr. d]

To add, the Civic FD uses Honda Type 2 coolant (blue color). It is long life and it's the coolant my FD had when I bought it. At the time (2008), Honda dealerships only sold the Type 1 (red color). It's a "pwede na" substitute but you will need to replace it more often. I had to search for Type 2 coolant elsewhere to do my own top-ups.



The coolant color is just a dye they added to make it more prominent when troubleshooting and/or finding leaks. It's not a code or anything else. In other words, mixing different coolants with the same color doesn't mean they are compatible with each other.

There have been horror stories of coolant turning into gel and clogging the cooling system because the wrong coolant was added, even though it was the same color as the OEM.

noted.
some literature warns not to mix the green with the red, even as others say fine.
i prefer to play it safe.