Join Date: Dec 2011
Location: Central Mexifornia
Motorcycle: K6 600
Re: Coolant in reservoir way over the full line
The cooling system pressurizes as it gets hot, which makes the coolant level rise in the reservoir. This is one of the main things preventing the coolant from boiling. If you filled it to hot line while it was cold then it would overflow when hot. This isn't a problem other than some drips might make their way out of the overflow hose. It's not bad for the bike but it's a waste of money I suppose, and antifreeze is toxic so you're polluting. The amount coming out should be negligible so those points are basically moot.
TLDR you're good
K6 600 - lots of goodies, head to toe
2014 FZ-09 - M4 slip on, GP shift
"If you fantasize about being shot from a cannon, we'd recommend riding a literbike as a marginally safer alternative."