This product has been recommended here as being a superior patch over JB Weld for cast iron block cracks.

What is the exact kind needed? White? Gray? RM302K ? RM303K? etc. etc.

How much is enough for typical repair down by petcock on 216? This crack barely seeps and was repaired a long time ago by someone else. Ham Handed job with huge pile globbed on. I see 2oz for $25, 14oz for $51, bla bla

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)