Very well put. And probably the least understood fact on this board. Tom NJ
Originally Posted By: d00df00d
Regarding fuel economy, it's not enough simply to think to yourself about what your driving habits have been and do some quick calculations. If you want to draw conclusions from fuel economy -- or dyno runs, for that matter -- you have to do several trials under absolutely identical conditions that you have gone to great lengths to control. Then, when you get the numbers, you have to do some sort of statistical testing to make sure that the difference you see isn't due to chance. This is what big companies do....That's the way it goes, and that's why we have science. Horsepower increases, MPG increases, engine wear reduction -- these are not things that can just be eyeballed. If they could, it wouldn't take millions of dollars and years of work by large teams of highly educated people just to develop engines and engine oil.