 Just pour into your gas can or fuel tank, then top off with fresh fuel. At every fill-up or when you store, start with Stable, available where fuel additives are sold. This radio commercial was made to convince you to stop speeding. We can't use siren sound effects on the radio, so we'll use other equally jarring sound effects to get your attention. Like telling you that whether you drive a little over the speed limit or a lot, you can crash just the same. You could hurt yourself or worse, others.