same way as any other block heater... ========================================================== Your Ford Ranger block heater is just like the heating element in an electric kettle . As long as the electric block heater is plugged in to an electric outlet that has power to it , the block heater keeps on heating the engine coolant if everything is working correctly
glass it keeps water hotter longer
The object keeps getting hotter and hotter until it melts.
If your heater control is manual you probably have a cable that has become disconnected at the heater control valve or on the back of the panel. If you have an automatic temp control system you probably need a new temp control panel.
the Styrofoam cup keeps liquids hotter because the heat travels slower.
It is just heating elements that wrap the engine and when pluged in it keeps the block warm as well as the oil and water
Styrofoam cups and caps. It keeps the heat in.