To figure out if you have the right dipstick, drain the engine oil and then add 5 quarts of oil.

Let it sit there for a few hours or overnight.

Check the dipstick. If it's at the full mark, you're fine. If it's not on the full mark, make a new mark at the current level and use that.

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)