Xtreme Freeze Spray (for testing of bilge heaters)
Xtreme Freeze Spray (XTRFRS)
Xtreme Freeze Spray can be used to test any brand of engine compartment heater. To test the functionality of the heater, just spray on the test area of your heater to turn it on. If your brand of heater does not have a marked, designated test area, look for the thermostat, or check with manufacturer of your heater.