People often ask why gas prices tend to go up by Wednesday evening and Thursday and it goes a little deeper than just the start of the weekend. The Department of Energy releases a report every Wednesday and the contents of that report, good or bad, will likely have an impact on gas prices. So, it would just make sense that you should buy your gas on Monday or Tuesday, ahead of that report. Also, you are more apt to save money on local gas dealers because the bigger companies are required to buy a particular type of gas which is more expensive. Places like Thornton's, Circle K, Huck's and Casey's might be better and cheaper choices here in the tri-state area. Click here for other gas saving tips and the difference between Premium and Regular gas from aol.com.