Schpee007

Hi All. I am one month into my first 911 and am trying to learn all I can about these fantastic cars. One thing that struck me during my buying research process was the maintenance intervals (engine life blood oil changes aside, I get that). For example, new plugs every four years seemed surprising to me given the build quality of 911s. Are the intervals meant to keep the car at "peak" performance, but aren't necessary for the car to run well and for a long time? Would appreciate the experience and insights of the rennlist community. Thanks!