The thermostat helps the engine reach operating temperature faster by restricting water flow to the radiator. Once the engine is at or near normal operating temperature, the T stat opens up to allow most or all of the coolant to reach the radiator.

Whether the outside temps are hot or cold, you want the engine to reach operating temperature as soon as possible.


1950 Chevrolet 3100 (Ol' Roy)

1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)