I have noticed that when I drive my car shakes usually around the 30 to 40 MPH range and once I pass 70 MPH. It happens all the time. Now when I use Techron in my gas tank the car runs as close to new as possible. Its like magic. I've read on here alot of people use it every 3000 miles or before oil changes. Has anyone been using this on every fill up? Can it be used on every fill up? Every other fill up? I've read about people using 3 oz. of Redline on every fill up. Wonder if I could just use 3 OZ of Techron on every fill up? Should I just go with the Redline? thanks!