If you ask any one of our mechanics here at Vans Sport Center what motor issues they see the most, they will tell you that the majority of service work they have to do on outboards now a days is fuel related. Which right there should tell you that making sure you have good fuel is one of the most important and preventive things you can do. The biggest problem with gas right now is the ethanol that is in it. The other major issue is letting it sit around and go bad. Gas can go bad over time due to water getting in the tank, oxygen, light, and the summer heat. This article will talk about some of the preventive measures you can take to avoid problems related to bad gas.