Seafoam?
I must admit, I don't know much about this seafoam product. There have been a couple members who have said they liked it. Here again, this is all to a consumers preference. For the reasons 93XP, you say you use seafoam, as a stabilizer, carbon build-up remover, I'd ask you to do one thing. The next time you fill up your tank with fuel at your local station, read the placard that are normally pasted on the fuel pumps. Most, if not all fuels, have the same cleaning and stabilizing additives in them. So you might wonder if your paying for the same product twice....
I use Chevron fuel, not becaue of preference, because it's the only service station in my neck of the woods. On the placard, the corporation describes what they add to their fuel to clean your engine, coat your bearings and remove carbon build-up, all while cleaning your injectors as it's being used. Techron is one of their primary additives, along with other detergent products that are meant to prolong the life of your car.
So for me, I can't justify the extra cost of some "STP" injector or fuel stabilizer product, when I'm getting if for free!.......
Just my opinion XP, and I respect your too!.......