(Portland, OR) -- Lower crude oil prices and weak demand continue to send gas prices down. Triple-A reports that over the last week the national average declined a nickel to three-25 a gallon. Oregon's average dropped seven cents to four-04. Triple-A projects Oregon's average will move below four dollars a gallon. Seventeen Oregon counties currently have averages below four dollars. There are reports OPEC Plus could cut production levels which could slow or end declines in fuel prices.