Three or four days after buying my first car, I came to a disturbing revelation: Paying for your own gasoline is expensive! You don't realize just how much of a pain in the butt it can be—and how much junk advice is out there on the Web—until the entire financial burden rests solely on your shoulders. So I decided to geek out, learning everything I could about how to squeeze more miles per gallon into every fill-up—and share it with the rest of the pump-fearing masses.

Over the past couple years, I've tried every gimmick—acetone, fuel-line magnets, intake air swirlers, you name it—to top out on gas mileage with my 1991 Honda CRX. Needless to say, these gimmicks didn't get me anywhere—as Popular Mechanics' own Mike Allen has proved so many times, and he's debunking them once again. So I jumped on the fuel-economy bandwagon with the next generation of Mike Allens. Some call us hypermilers, but at my MPG forum and blog, we go by ecomodder—someone who combines car tweaks, behind-the-wheel techniques and some basic skills to cut back on trips to the gas station.

My new lifestyle has taken me from an average (but very unsatisfying) 30 mpg to an efficient 55 mpg in the last year, and the 70 mpg mark is looming on the horizon. With gas prices hovering around $4/gallon and forecasts scouting even worse news, getting even more out of every gallon of go juice has become even more important to me—and you can get in on the action, too.

Being a bit of a tech- and gear-head, some of my mods (such as converting my automatic transmission to manual, with my lean burning Japanese-market Civic VX engine just arriving in the mail for a transplant) might seem a bit extreme. Still, while I've beaten the 27-mpg EPA rating on my CRX by over 30 percent with the best practices below, there's so reason you can't go out and cut at least 10 percent before a summer road-trip weekend. These simple tricks will definitely help you save fuel—without ripping your car apart.