is your bike loosing coolant? you shouldn't have to top it up. mine has done 40000km and hasn't lost a drop(I did just change the coolant and brake fluid
for its 40000km service) if you think the coolant is in a bad place try topping up the rear master cylinder fluid without stripping the bike.
no it isn't losing water, it took me 20 minutes to remove 4 clips, 6 bolts, & pulling plastic apart to put water in on my first long ride of the year, its only a matter of time before something breaks or weakens by pulling it all apart. for about £5 i can erase all that by moving the filler cap !