[truckin 79]

Anyone have any feedback on iridium spark plugs? I have some deposits on my spark plugs that seem to be oil fouling. I have standard Delco plugs on there no and the center electrodes are starting to round a little. So I thought I would try some Autolite iridium plugs on the truck. I thought how could I go wrong with a coupon at Advance auto they came out to be about 50 plus these plugs have a lifetime warranty.