Well, I was wrong again. I checked with two farm tire service people that covers 75% of this entire area. Neither had heard of Rim Guard and both still use Calcium Chloride but on a limited basis. Usually only the older smaller tractor owners ask for it it. They both charge an addition $75 service fee if you have a flat and the tire is wet.
I stopped at Wall Mart and picked up 13 gallons of RV antifreeze on sale for $3.47 a gallon. 6 gal. in each back tire filled it completely. I tried to re-seat the tire to the rim with the valve core in. Didn't work as could not get enough air in the initial shot to do it. Had to remove the corr and then hit it with the blow gun. Then the fun was to get the core in without loosing a lot of liquid. Fun Fun. Job is done and tires are back on the tractor. Now to get the chains on as my drive is rock and a little up hill going out. Also will be using it to blow a path to the barn which is down hill - but what goes down has to come back up.
Talking a 30% chance of snow Monday night. I'm ready if it comes and would like to see some snow before it turns off real cold and freezes all the water line up.