right on. my commentary was that, at least from what i saw, you ought to be a long way from enough miles and tanks especially when trying to be objective. To put it in perspective the difference between your initial 13.5gal avg and the 13.72 mpg improvement is a savings of 0.23Gal of gas in your 191mile test case. A bit less than a quart which is a lot when steady state going down a flat highway. Then again its probably not very many 2bbl 318 B-van digs from a stop sign ;-).
