How low is "low"?
How long is "a short time"?
Did the oil light come on?
I get noise from the lifters if I run the Starfire low on oil.
Run to the local parts store and get a bottle of Rislone. Give that a try. It replaces a quart of oil, so you may have to drain some if the oil is full.
But if that doesn't do it...
Paul