The only problem with filling your reservoir tank all the way is that when the bike gets hot and bleds coolant over to the reservoir, it has no where to go so it pours out of the overflow tube. This can get dicey if the coolant gets on the rear tire.
What bike are you talking about Guru? I would like to think that the Kawi or the Suzi would have better markings on the reservoir bottle.
Off subject, Guitar Guru, what axes do you play?
I've got a Jackson (PS4, maybe?) a Wasburn Dimebag Darrel (the cheapo model, because it is a p.o.s.) some Greg Bennett Design Hollow Body (it has an "S" on the head, Sampson, something. Rainy days and the booze killin' me

) an Ibanez acoustic and my first guitar which is a Kramer...poor thing is unplayable now...the neck is all out of whack.
Been playing for several years but am not very good. No formal instruction. I figure if I can't play them, what's the harm in collecting?