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Compass Marine How To | all galleries >> Welcome To >> Fresh Water System Winterizing > A Better Product
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A Better Product

Here is a shot of a better true propylene glycol antifreeze product safe for most plumbing parts. It also has a decent corrosion inhibitor. It is safe for engines and domestic plumbing systems. It has no alcohol in it.

The item in front is a sight refractometer. This is a tool I use to test the concentration of teh AF in the system to determine when I have pumped enough through the system. Samples are taken at each faucet, shower head and wash-down spigot etc...

Star Brite Aintigel -50 is also an excellent -50F product. If you are in an area that gets really cold, less than -25F then you may want to consider a -100F rated product.

Canon PowerShot S100
1/60s f/4.0 at 5.2mm iso160 full exif

other sizes: small medium original auto