I looked at it just for...fun? All the usual sniping and hatred, and they didn't even see that Chevron dropped PEA in Techron, replaced with the cheaper and less effective buta-whatever back when (we discussed on here).
What a distressing site. Anyway, we know Red Line Sl-1 and CRC make real PEA cleaners and PEA is the most effective engine deposit cleaner there is because it works at elevated temps (also used as detergent additive from the fuel pumps).
I bought a bore scope. Rick sez it is likely too big for plug holes, but it's cheap enough I can get another if I get so motivated. I definitely would have 20 years back, but this one has a whole bunch of LEDS in the end so I can inspect my Harley compensator ramp surface for smearing without draining the oil and taking the 100 screw off the cover.