Whatever you do, just resist temptation to over do it. Molakule warned everyone about VSOT, saying to use it sparingly. Like most I had to learn it the hard way. It didn't do any harm from my view, but sure produced some side effects that I didn't expect or want.
I never used the Techron Concentrate. I got nothing out of regular Techron in years past. I never felt anything from Seafoam, but it did reduce knocking in warmer weather. Regane was the first product to produce butt dyno results that you could feel with distinction. Naturally, the computer reindexed the fuel trims to compensate, so it was short lived. Amsoil PI is my product of choice now. All the other brands, including Techron, removed % from their MSDS. I don't know why. Many don't even list PEA as an ingredient.