I'm curious to gather thoughts on the up side or down side of using Schaeffer Neutra in my fuel system if I'm already using Chevron gas with Techron in it? I've become a recent user of Neutra and was blown away by the job it did in my crank case 500 miles before an oil change. For that job, it cleaned extremely well. In the fuel tank, I've just run three consecutive tanks each with a full bottle of Neutra and have seen a noticeable jump in fuel economy. There, I've probably reached a plateau now that injectors are running cleaner and cylinder walls are lubed. I had been running Shell gas for the last 5 years, but now there is a Chevron station 1/2 mile from my house which is much more convenient. Would there be any negative effect to mixing Neutra in with a tank of Techron gas, or is the concentration of Techron high enough that I don't need to use the Neutra anymore except in the crank case just before an oil change?