Here's my Coolingmist setup:
The w/m is set to start spraying at 16psi (I thought 10psi was too low, only to find 16psi is too high so I'm aiming for 11psi - 12psi next...)
[ame="http://www.youtube.com/watch?v=mxp0C-VBo-I"]Audi A4 Water Methanol indicator - YouTube[/ame]
Tank is hidden behind my custom sub enclosure and the rear seat

The pump sits inside the 1.5gal tank (living up in the Colorado/Wyoming area, I want to keep my wiper fluid separate)

Hose coming into the engine bay


For me, I prefer, just filling up with pure methanol from a local fueling place, and mixing it with distilled water. I use 3 - five gallon jugs for the methanol, and one - 2 gallon jug for my 50/50 mix. And for ease of use I made the funnel/hose to fill the tank, though the tank can slide out from the cubby hole to be filled too.
