Can anyone tell me the correct length for the dipstick to be used in a 235 straight 6? The guys at the restoration shop that did our restoration think mine is incorrect and a previous owner may have installed the wrong one.

They put 5 quarts of oil in the crankcase plus an extra quart for the external oil filter and the oil level on the dipstick says I need to add oil.

Thanks,

John in Raleigh, NC enjoying driving our restored '58