if you have car ramps or a jack and stands you could change your own antifreeze your self with a 5 gallon bucket, cap the bucket and take it to your towns dpw, or a repair shop and drop the old coolant off to be disposed of properly, new gallon jug of coolant is 12-14 bucks. get the green stuff.
just pull the lower radiator hose and let it drain in the pail, done, refill with water from a hose run it around for a little while, drain it again, and fill it with antifreeze and water.
if you have pets keep them away from you work area, dogs like to drink coolant, it tastes sweet to them, but it can kill them as well. hose down the work are real well after your done.
