BASIC electrical theory:caliber172 said:Anyone try the E3, iridium, or Bosch Platinum+4 plugs? Which is better if any?
Just because you drove it that long on the original plugs doesn't mean it was good for the van. They should be changed at least every 60K for best performance. My '93 S-10 had a plug foul at 70K miles and caused a misfire which damaged the cylinder and made the motor start burning oil. For the price of spark plugs, it doesn't hurt to change them every 30K and it will keep your motor running good and keep the gas mileage good.My 2000 van went 163000 miles on its original plugs
For a delivery vehicle, probably doing a lot of short trips in city driving, those aren't bad mpg numbers. Chances are it's been used that way the entire life of the car, so it hasn't seen an easy life.moparfamily said:van runs 12.3 to 13.3 mpg all the time never had an issue 318 is a great mopar motor. ok now back to the caliber yes it pinged and yes bad gas mileage since we got it. they did some computer update a while back and the pinging went away but the mpg still sucked. like I said best mpg ever 24.5 mpg. normal mpg 22 this time 18.2 mpg 18.4mpg. we check the mpg every time we fill up. and the dealer knows about the mpg problem the service mgr took our car home and drove it couple of days he avg 19 mpg.