Heavy vs. Light Oil Ball

[rv driver]

At the simplest level if you use a heavy oil ball on a dry lane, it can act real weak. Because it will read the lanes too early/much (see the friction), hooking too early and straightening out losing it's hitting power etc. or just hooking too much and missing the pins.

I second this opinion. But most centers I'm familiar with use a THS, with medium to medium-light volume. Unless you're bowling early, early in the day, you won't run into heavy oil in my (admittedly limited) experience.