I have looked at the plugs, but never tried them. The only advantage I see is that you are giving a bit more surface area for the spark, but only on one electrode! I question how much improvement will be seen, and even if it does exist if it is worth the price. I also could not figure out how to "gap" them! Dick Ryan wrote: > > Joe or any others on the list: Has anyone tried the new Bosch Platinum > plugs with the multiple prongs (can't rmember if it is 3 or 4)? Bosch > claims both a cleaner burn and a 3-4% increase in gas mileage. > ------------------------------------------------------------------------ To address comments privately to the moderating team, please address moderator@xxxx