As gas price is going up again, I often wonder if the name brand gas I am paying for is justified. Does a less-known gas station sell “dirty gas” or “bad gas”? If you have the same question, you may be interested to read this article 10 Things Gas Stations Won’t Tell You.

Suppliers share pipelines, so they all use the same fuel. And the difference between the most expensive brand-name gas and the lowliest gallon of no-brand fuel? Often just a quart of detergent added to an 8,000-gallon tanker truck.

There are a few other things worth knowing in that article, such as the payment method. As the economy is not doing so well, it is good to know what are other ways the gas stations are trying to make money from you.