If you're not concerned that much with the mileage, it's really not an issue. Either way will work and you're not going to do any damage to the engine. But at these gas prices, if you get your mileage up from 9 to 15 and it costs you a couple hundred bucks, those repairs will pay for themselves in fuel savings pretty quickly.
Edit: I suppose I shouldn't say you won't do any damage to your engine, because running too rich can definitely do damage. I actually destroyed my cylinder walls and piston skirts because I was spraying way too much fuel and washing the cylinders. I was so rich that I had enough fuel get past my rings and into my oil that it thinned the oil enough that I smoked my rear main bearing. That's an extreme case, but it is an example of what could happen. Expensive lesson learned on why not to run your engine rich, lol.
Last edited by fogged306; March 12th, 2011 at 11:30 PM.