Tip 21: Use Less Expensive Gas

Unless your car is knocking and pinging, don't use a higher octane gas than your owner's manual recommends. For most cars, premium gasoline offers no benefit. Unless your car has a high-performance engine and your manufacturer recommends a high-octane gas, use the less expensive gas. Premium gas costs 10% to 15% higher than regular. 

Potential Money Savings: $200-400/yr.

Tip 20: Shop Around for Insurance

Shop around for insurance. If you're getting good service from your company and are happy with the rates, you may want to stay with them, especially if you have had accidents or tickets. But if your record is good, shop around to see how much you can save, then decide if the savings are worth the switch. 

Potential Money Savings:  $50-200/yr.