Cryo-tekTM AG Anti-Freeze / Glycol (5 Gallon)

Used as Antifreeze for outdoor wood boiler.

Easy shipping in cardboard box. 80% PG blue mix

Shipped item quickly; arrived when needed. Price was actually a couple dollars less than local supplier and I didn't have to "mask up" to go pick it up! Will definitely order from this supplier again!

It's a pretty color blue. Nicer looking than the red stuff. Sorry cant give much of a review as this is the first use. I believe its manufactured along side DOW aircraft deicing fluid so it should be good stuff with a nice corrosion inhibitor.

Had to research a bit, but the AG grade is able to be doluted down to the 30% solution I want in my hydronic loop.

I paid so much less than from my big box store AND it got delivered to my home. Couldn't be happier!

Use in rooftop chiller system

My baseboard heat system holds about 13 gallons of fluid. Five gallons of Cryo-tekTM AG protects against freeze to -10°F, pipe protection from burst to -60°F and will continue to flow down to -30°F. It is installed by pumping into system with proper valves closed and a drain open to allow fluid replacement after system is flushed. This should be done every 5 to 8 years depending on tested PH of system fluid. Frozen pipes are very difficult to locate and thaw; burst pipes can be devastating,,, protect your system! PLUS, Propylene glycol is non-toxic and environmentally friendly.