ok last year around this time my R18 has been sipping on coolant because it has not been leaking and the reservoir has been around an inch to two inches lower from the max line.
I bought some coolant and added to the max line and stored the car.

This year again i noticed it dropped from the full mark to about an inch under......



No idea why this is happening.... hopefully its nothing serious

 

some r18 blocks have been cracking due to poor casting. take it to the dealer and have them look at it.

 

i heard this from my honda technician too.....