I was going to suggest the EXACT same thing! But then I thought about the coolant reservoir on my 2010 Koup SX and how it would be impossible. So it really depends on the reservoir. Mine's a pain in the ass and it's next to impossible to see the levels, too. See attached pic.Why not just take a turkey baster and use it to suck out the excess? You can put it back in the jug it came in.