Actually, too LITTLE oil is what you're trying to avoid. Obviously too much is equally bad for different reasons.
I've found you get little or no rebound damping out of our forks at the factory recomended oil level, but that is the minimum I'd put into the forks if you're not into the incremental approach.
You should be good at 130 but I'd ride it before going to 125.
I now have longer fork tubes which put the rebound orifices more under water at 135 than they would be with the stock tubes, if that makes sense.