I drove my W30 up to Brainerd raceway last weekend and got 15.5 mpg. Pounded it down the track a few times, ran in the 13's into a fierce wind . Cruised through the Cross lake area, jumped in a crystal clear lake for a swim every evening. Drove it 180 miles home and never used a drop of oil. I don't think I ever had a Chevy that would do that.