I drove it again yesterday for 15 or 20 mi no problems I drove it today for a short test drive of about 8 mi to warm it up for another block fluid test. In this case the fluid didn't turn green or yellow but stayed blue for over 15 minutes and the engine was running for well over 30 minutes both idling and driving and the thermometer never got above 180

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)