I think I settled onto using pool antifreeze. This will add up to 35lbs per 6-12 tire and require 9 gallons I think.
Walmart pre-mixed RV antifreeze is less toxic prop-glycol and costs 2.58 per gallon (Super Tech)
Now deciding if using gravity or a pump to get it into the inner tubes
Here is the gravity method https://youtu.be/dJwX4HH6iPE
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Model 100 Dec 2020 - Running condition, has snow plow!
Model 123 Nov 2020 Hydro needs much work, or resto, building front end loader for this one
Model 100 Feb 2019 apart for total frame-off / sandblast etc resto
Model 70 Sep 2020 needs total resto and an engine, or for parts
Model 70/100 Mar 2021 buried in rust, frozen engine, got free for parts.
two spare hydro rears
"in for a penny, in for a pound!"
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