I think if you go to foam filled tires in the miscelanous section you will see a formula submitted by Farm with Junk about using 25% alchohol w' water to weigh tires.
Twern't I...
I'm a cal/chlor user myself. (Old school and content to stay that way)
My 150 has had cal/chlor in the rears for 37 years. I've had the occasional punctured tire. And last fall when I put new rubber on the tractor, the rims looked almost new condition. Cal/chlor does not eat rims in a matter of minutes. I've seen 40 or 50 year old tractors with rusted out rims. They were probably ran with an on-going slow leak for months, even years.
If you need SOME weight, windshield washer fluid can do the trick (alcohol) Cal/chlor enables the same volume of fluid to provide an additional 20% of weight. It's not "EXXON VALDISE" all over again with a leak. I run a mild mixture that barely freezes to a slush @ -10. If I see a leak, the tractor heads for the driveway, road, shop, or someplace where it isn't going to spill on my lawn or hayfields. And if there's a leak, I start IMMEDIATELY pumping the fluid out of the tire and into barrels. No matter what choice of tire fill you go with, it's $$$.$$ down the drain if you loose it. So DON'T loose it. That minimizes the "environmental catastrophy" issue.
Cal/chlor is easy to store in dry form. Water is usually easy to come by. For field repairs, if I was using wwf, I'd probably have to carry a barrel or dozens of 1-gallon jugs on our service truck. With cal/chlor, there's just a couple bags of calcium chloride flakes laying under the toolbox until such a time as it's needed.
For convenience sake, I've been buying my ca/cl at a swimming pool supply store near home. $22 a 50lb bag.
My #1 choice of tire repair services will charge me $100 to $125 (depending on size) to pump a tire down and then re-install fluid once repair is made. Then there's the cost of repair, plus a "service charge" and of late, a fuel surcharge. Long ago it became prudent economics for me to purchase my own tire repair "tools".
I bought a Teel stainless steel chemical pump, 2 lengths of GOOD garden hose, that NAPA adapter, and I keep several 55 gallon plastic drums on hand. I have 1/2 dozen tire "spoons", a long and a short handled tire hammer, a pneumatic bead breaker, a mechanical bead breaker, and a tool box full of tire patching material/valve stem tools/spare stems. I use a die grinder to buff tubes before patching. The entire set-up, less the (expensive) pneumatic bead breaker represents less than $300. (Fluid transfer equipment alone, around $100) I could EASILY spend that much for one "in the field" repair. And believe me, I've had more than one tire to fix over the years.