Re: Bosch Platinum 4 way
My experience from an engine that always were hard on plugs, is that the wear is distributed over the 4 electrodes. The spark finds the shortest way so as the gap increases on one electrode the spark shifts to the next.<br /><br />In effect, it means longer life. If you change plugs at regular intervals that makes standard plugs perform OK, you'll gain nothing from 4x electrodes.<br /><br />In general sparkplugs have developed over tme to suit new ingition system designs, just like coils and other parts, aiming for a more accurate operation to make better use of fuel (better performance, less consumption)