Due to a serious lack of funds, I've decided in an effort to cut costs that I'm going to go back to doing some basic servicing to my own car, rather than take it to a garage for everything.
Looking around a Halfords the other day I noticed some spark plugs with 4 electrodes on them, can't remember who they were made by now. Surely this is just total overkill, and wouldn't make much if any difference? From what I can gather from my limited mechanical/electrical knowledge, the spark is going to use the electrode that is closest? Thus rendering the other three redundant?
What plugs do you all use, or recommend for an X20XEV (Ecotec)?
And what are their prices? The car is standard apart from a K&N Panel filter (possibly with drilled airbox soon - haven't finally decided whether to do that yet) and a Sportex Back box, so surely I don't need any of these ridiculously expensive plugs?