CLEVELAND -- From saving on gas to electricity, people have been trying to find ways to scrimp and save. But some of those supposed money-saving practices could actually be costing more cash in the long run. We busted five money-saving myths to help you and your budget.

Money-saving Myth No. 1:

Fill your gas tank in the morning. The theory says that fluids are more dense at lower temperatures, so a gallon of cold gas actually has more gas molecules than a gallon of warmer gas. QuikTrip spokesman Mike Thornbrugh said, "It's another urban legend." He said the gas at QuikTrip has such a fast turn around, it's in one day out the next. Thornbrugh said temperature has nothing to do with the amount of gas you buy.

Myth No. 2:

Opening windows and using fans will reduce your electric bill. Energy expert Mark Wayne Mullin said, "As long as the house is sealed tight, it's better to have air conditioner work than have a fan in every room."

Mullin said an air conditioner runs on one motor, whereas if you use a fan in each room you could be using at least five motors, in turn pulling more energy.

Myth No. 3:

Turning the air conditioner up or down when you leave home saves money. Mullin said unless you have a programmable thermostat, this is not true. Experts recommend keeping the thermostat at 75 degrees all day to save the most.

Myth No. 4:

Small loads of laundry use less energy. Experts said you'll use more water and more gas or electricity doing multiple loads than you would doing one full-size load. Mullin said regardless of the size, the washing machine will have to go through several cycles and the dryer will have to heat to a certain temperature.

Myth No. 5:

Buying in bulk saves money. Barbara Benedetti has bought in bulk for 20 years. She said paper products are usually always cheaper in bulk, but certain items like laundry detergent and deli meats don't always save money.

Benedetti said, "You do have to do your homework because a lot of times if you check circulars in the newspaper, a lot of times you can get things cheaper at Warehouse Market or other grocery chains."

She said the key is to check the quantity versus the price. Also remember, when buying in bulk, check the shelf life. If you buy more than you will eat or can properly store, you'll end up throwing it away.