If the original gauge works (which it probably does), I'd put the aftermarket one under the hood or in some hidden place, or just remove it altogether.

I just took this picture of hour or so ago (idling in the driveway, by the way). The temperature gauge and the oil pressure gauge have both been checked against modern instruments and they are both perfectly accurate. And have never been rebuilt.
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Last edited by Otto Skorzeny; 10/19/2026 6:16 PM.

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)