Originally Posted by rufusswan
A logical point, that makes no freekin' sense. That's about like buy new shoes one at a time.
At $3 apiece, plugs are the best, quickest and cheapest 'test' of faulty running.
I don't even carry 1 new one, I just keep one of the old ones I replace with new ones every major service. After all they were working just fine when I took them out.....If I need a known good one to get home I have one. What are the odds I'll need two on the side of the road? On the other hand, a couple of times in my life I have gotten a faulty plug right out of a new box.