It could just be the ancient remnants of old oil used back in the day which was not as highly refined as oil of today and had a tendency to separate and glue itself to the oil pan and not drain out at oil changes. You can test to see if the gray slime contains metal by dissolving it in gas and put a strong rare earth magnet in the jar.


1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission