Maybe they buy from both suppliers and use them interchangeably or, as I saw posted elsewhere, someone changed them but only did the easy to reach ones!
Yeah, well ill be servicing the cruiser next month and probably going to replace them all with NGK platinums. I was only curious to see how the gaps were doing after 22k and not good lol. Plus I wanted to check plug tightness as I have a ticking noise that appears under load sometimes when working the engine hard, I suspect the exhaust manifold gaskets are leaking when the exhaust temps are higher.
Might be of interest if you didn't know already but the Factory Service Manual gives this info for recommended plugs:
Manufacturer Product
DENSO - K20HR-U11,
NGK - LFR6C-11
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