Testing Antifreeze?
just take the radiator cap off or if your radiator doesn’t have a cap you will have to use the overflow tank and just stick the hose into the fluid and squeeze the bulb and draw fluid out until it shows level on the leveler on your checker and then just read the needle on the gauge and it should show -20 ETC, or below that, if it’s not showing at least -20 I would drain about a gallon of fluid out of the radiator and add a gallon of antifreeze.
