Pegleg
i've been a member about 4 years about the same time i purchased an alu timing cover!!
re US vs english liquid measure your gallon is slightly smaller as a child dad would send me to the the corner store for a gallon of parrafin with a US jerry can and i always wondered why some ended up on the floor.
i think a litre is near enough 1 US qt i'm getting on a bit, don't like metric a pint of beer is just right litre too big
i've had another look at the book, "1956 FORD truck shop manual" it refers to a 272 ECR and ECY-W.
ECY-W 5 qts + 1 qt if filter changed
ECR (2 barrel carb) 5qts + 1 qt if filter changed
ECR (4 barrel carb) 6qts + 1qt if filter changed ????
may be a misprint did not intend to misslead
stuey