|
I'm going to guess that if you replaced your spark plugs and used premium gasoline you are going to see your mileage clime back up, I'm not sure where Big Dave is getting the lack of spark plug wear from, but as I understand it spark plugs wear because of the electrical arcing wearing the tip down, at least that is what the SAE says in their paper on spark plugs and I've changed more then a hand full of spark plugs that were wore out, down to little nubs.
Your engine might not ping with lower grade gasoline but it will richen the fuel mix and adjust the timing to make up for it, chances are you will see a cost savings from better MPG that will out weight the increase in fuel cost and if not it will have cost you an extra 15 cents per gallon or around $2.00 right?
|