Bowling This Month describes in their ball reviews heavy oil as being 50 units of oil at 42 feet. One of our house shots is 7 to 7, top hat 40 feet pattern 80 to 85 units of oil. That's the house shot, nothing special as far as the house is concerned. There's tons of carry down and hardly any backends due to the continual day to day carry down of all this oil. Other houses in the area put out about 55 units of oil, which is still more then Bowling this Month considers to be heavy. But that's what we consider just a good fresh medium shot around here. Bowling This Month's dry shot has only about 35 units of oil. If our bowlers saw that, most would march out of the house in protest.
I bowled one men's state tournament where I swear there was nothing but oil from gutter to gutter. No one did well at that house for the tournament. And one of my buddies won the high pot game with a 169.
Heavy oil is all relative. I understand the further east you get the less oil is used. Could just be hear say and rumor.
Erin