VP MS 109 is an unleaded, highly oxygenated fuel that produces more power than any other unleaded fuel - up to 5% more power than premium unleaded fuel! We recommend it for applications with up to 25 lbs. of boost and naturally aspirated engines with compression ratios up to 13:1. It's the best all-around fuel for motorsports compared to other unleaded fuels. MS 109 is ideal for drag racing, circle track, road racing & rally, and off-road/rally racing. Try VP's premium line of racing motor oil and lubricants and discover unrivaled wear protection and performance.