just an FYI -
4,000 miles now on my '05 GT....
cleaned air filter; I was surprised by how clean it really was. however, next time i might just replace the thing as it's fairly messy to clean it.
oil - did get the 24 mm wrench....used one of those "strap" kinda wrenches you can buy at Sears to get filter off. worked very well.
coolant - much chat about coolant here, please let me tell you what i found on my scoot. i "topped off" yesterday with fluid type "per manual". checked here last night only to find that i really should be using an "OATs" type (no silicates, etc.). so i drained it today. color was green, exactly the same color of what i topped off with. flushed with 50/50 vinegar-water, then just water (distilled at all times), then filled up with Havoline DEX-Cool extended life. this stuff is RED.
my guess (and only a guess)....what i topped off with was probably same mixture as what came with the scoot.
FYI - to get a through draining of coolant system, drain then cover coolant cap with fingers and shoot a little compressed air (from a can is what i did) through a gap in your fingers. this will drain even more fluid.
all in all, these tasks were no big deal.
thanks