That's interesting because BP is the only place we'll buy fuel around here. I use a F250 super duty diesel to pull my backhoe with and with BP fuel I get 18.7mpg but with all others, I get 11.5mpg.I shopped around and I found out locally that the BP station gives me the best mileage by about 3 MPG!
On average, It does cost about 1¢ per gallon, but seems to more than make up for that cost with mileage...
This can happen because of water content in the tank itself. Almost every gas station tank has some amount of water in it due to condensation, ground seepage, contamination from the fuel delivery truck, etc. Most of the time it's fine, but when water levels get too high the station is supposed to have the pump tech pump the water out. Obviously, some are less rigorous about it than others. As for deliberately adding water, that is illegal. Weights and Measures is a government agency that randomly checks retail outlets to make sure they're fair. This includes measuring out a gallon of gasoline to see if it actually pumps a gallon, deals with scales in grocery stores, etc. Failure to recalibrate devices that are off can result in fines then shut down.I've heard before that some gas stations have more watered down gas than others. How would they be able to do that? I know that some gas stations sell gas for cheaper than others but I thought unleaded was unleaded??
Never knew that, but GREAT to know now. I will always look for the delivery truck from now on!Don't fill your car up at a station where fuel is being delivered! Gasoline is lighter than water, so water usually isn't a problem until the fuel truck arrives. When the fuel's added to the tank, it stirs up the water and can get mixed in with the gasoline you're pumping into your car. In older model cars this can cause vapor lock down the road (happened to me twice with a 84 Bronco II) and really ruin your day. Just the same, I never fill up if the truck is there, I go to another station or wait until later.