What do you think about this statement.........

Also remember too, those 70s carburetor motors usually had catalytic converters heating the heck out of the engine and cooking antiquated motor oil that people never changed on time.
"Antiquated", Quaker State, er I mean
guaranteed sludge
An intake valley in a Ford once was so sludged from it I had to scrape off 3/4 inch of sludge