Pledge to Hedge: A High-Tech Way to Boost Your Vehicle’s Gas Mileage
Jul 22nd, 2008 | By Keith Fitz-Gerald | Category: Oil Investment & Alternative EnergyI begin today with a startling number: 5.2. That’s the percentage my gas mileage improved when I added Pulstar Pulse Spark Plugs to my 1991 Mazda Miata.