[ewetho]

Well waste spark vs. old fashion systems. Not a lot different. Heck it is almost the default ignition in use today if you do not have Coil Over Plug (Coild for each sparkplug).

Yes the waste spark ignitions will fire in different directions from power to exhaust strokes however so does a FORD Explorer which does by the way use DOUBLE PLATINUM spark plugs from the factory. Bunk I tell you. Hogwash even.

The platinum tips should not wear significantly as that is very reason for its use. After 112,00 miles most of the welded on pltinum tips for my fathers explorer werer still there. YUP. So if that little tip welded on is still there not much wear. That is how the newer cars are going to 100,000 miles on a plug change. Some of the newer Lexus utillizing waste spark are actually using a COMBO IRIDIUM/PLATINUM plug. Iridium center electrode(Harder than platinum) but thicker than the standard after market (.7mm vs. .4mm). Then the outer ground electrode is pltinum tipped. This is for longevity performance.

So in review, Platinum is just fine, if you have a properly designed pice for your specific application. The +2 and +4s are omproise products and if you have trouble punt and get the right part. Should be not problem. A spark plug failure is not necessarily caused by the mateial used per say (Platinum vs. Copper) but possible a manufacturing/installation problem.

So in short yes I do belive that NGK makes some of the best plugs out their and would bet that if you got any of these

BKR6ES -- Standard Plug
BKR6E -- V-Power Plug (v notch in center electrode sort of like reverse splitfire)
BKR6EGP -- V-Power Platinum Plug
PFR6G * -- Laser Platinum Plug / Premium (Laser welded platinum tip on ground electrode as well as center electode of platinum)
BKR6EIX -- Iridium IX Plug

You'd do just fine.