Iridium spark plugs also offer cleaner ignition by completely combusting the air-fuel mixture during the starting sequence.
Next time you switch spark plugs, consider shelling out a few more bucks for iridium, especially if you drive an off-road vehicle or do a lot of towing?Still, drivers who make the switch almost always say that iridium spark plugs pay for themselves with improved acceleration, fuel efficiency, and extended time between spark plug changes