How much was oil in 1977?

It depens on the size of the oil cooler.

Anything over about 1/4 quart above the recommended amount is too much. Too much oil can damage an engine just like too little oil. Drain out any excess and take no chances.

1 barrel of oil = 158.987295 liters1 barrel of oil = 42 US gallons

5 qts. with a new filter.