Ron,
I just recently sold my 1997 GMC Sierra with 182,000 miles on the odometer. It ran as good and as quiet as the day I bought it in 1997 and it still had the original spark plugs. It had a 5.7L Vortec V8 and was running "Iridium" spark plugs. Now there is a plug I will swear by! Man I miss that truck! Another "Real Life Experience". Just saying...
SLC
