So I was at the pumps today filling up and I noticed the State of Oklahoma Standards testing and noticed a few things interesting.  Just a thought but you can maximize your return by going for the pumps with the closest measurement to being accurate.  Oklahoma has a legal tolerance of +/- 6 cubic inches and I noticed regular was -2, mid-grade was 0′d, and Premium was +2.  Check the pumps next time to get a true maximum return.

Also, I always put in premium once every 5 fill-ups or so to help with engine gunking and carbon buildup.  Your ECU typically will compensate for the higher octane of fuel but most premium gasolines come with cleaners in them to help remove gunk(I use Shell V-power usually) and I seem to get better gas milage on higher octane fuels as well.

Finally, I don’t let my car go bellow 1/4 tank(I did this week but I try not to).  Reason being is the fuel pump.  Think gas is high, how about a $1000 fuel pump replacement job?  Fueling more often doesn’t hurt your gas economy much to the best of my knowledge and it can save you that fuel pump damage due to overheating and burnout.