I am in Texas and anti freeze is very hard to get rid of legally. We use extended life coolant in our over the road trucks. We have a recycling machine that sucks it out of the system, filters it and pumps it back into the truck. This is not a routine maintenance. We only do this when we have to remove the radiator or tear into the engine. We change water filters on the trucks every time we change oil and we never have anti freeze to dispose of. Whatever you do, don't mix it with used motor oil. Recyclers will reject the whole tank of oil. I use extended life coolant in my old jalopies also, and I just never change it.
