Yeah what Anti Climax said... You could also use one of those sump pump failure alarms that goes off when it detects water. Personally I keep an occasional eye on the fluid level in my coolant reservoir. I will likely watch it like a hawk after my warranty expires next winter.
If you live in a very moderate climate I suppose you could get away with it, but the added degradation from lack of TMS would be unacceptable to me.
2014 Blue Candy FFE
http://www.fuelly.com/car/ford/focus/2014/triangles/303811 (since this forum doesn't allow BBcode in sigs)