[mariec99]

I was looking at these tips and they are very good -- thank you. Here is my question (I know near nothing about cars, so please bear with me.): I drive a Honda Accord (certified used, 2004) and since I want to drive this car as long as I possibly can, I use mid-grade gasoline with the idea that better gas might help the car run well longer. Is this true? Is mid-grade worth the extra few pennies per gallon?