I found the FR8DPP30X number on the box to the spark plug itself, it's printed just below the 6702. On the box though it only states the it is indeed platinum and not double platinum, guess they've made a change of what the code represents

Everything you've spoke about make perfect sense, if I would have known that the lifespan and performance was a real factor then I would have picked up the double platinums in the first place. I'm going to return these and pick up 7422 plugs.

I was thinking that the whole double platinum thing was more marketing than anything, it's good to know that its not. The +4 plugs come to mind...

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1992 Mercedes-Benz 400E
2002 Mercedes-Benz ML500

The +2 and +4 seem to have their uses, though one of them appears to be adding confusion because when someone says "double platinum" that's what some people may think. IIRC the (+) series are single platinum (center electrode) and the side electrodes are conventional. I've heard some people swear by them, and others (particularly with these dual-plug, sequential-fire engines) swear at them.

It's curious that you got that conversion from the box. Is it a stick-on label? I'm wondering if that was something the store might have mistakenly put on. Many years back I worked in auto parts and when companies did this they'd send labels and instructions -- which often were great, and often not. Or, perhaps, Bosch has managed to confuse themselves with their new scheme.

In case you care for the sake of abstraction, Bosch also does this with their iridium plugs. There are iridium, double iridium and one that is like a hybrid, where the center electrode is iridium and the side is platinum. Why? Probably marketing, so you have a plug option in every dollar segment.

Me? Personally I'm waiting for plutonium plugs. They glow in the dark and don't even need coils or wires.

That conversion is from the box, the individual box. It's printed directly on the box along with the 6702.

Too many choices...

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1992 Mercedes-Benz 400E
2002 Mercedes-Benz ML500