Greetings,  I have been reconditioning several Gen 2, 2004-2009, Toyota Prius cars. A lot of these cars from this generation develop oil consumption, supposedly from less than ideal oil ring design / carbon build up.  There is lots of talk / success stories online (including your website) of using B12 Chemtool #0116 to soak the pistons (remove spark plugs and pour directly into cylinder). In addition to this piston soak I have been running B12 in engine oil at 2 ounces per qt of oil, at idle till engine warm prior to an oil change. These methods seem to make a big difference. My question is, are there other products you sell that might be better for this? Also, for fuel system cleaning I have been using Redline SI-1 which has according to their SDS 40% PEA, would B12 in the fuel tank be as effective? Perhaps at a higher concentration of cleaner to fuel, or maybe several tanks in a row? It would be nice to stock  and use one product. Which leads to my last question. Are all the similar products you sell similarly effective? I assume that they are slightly tailored to an application ie Direct Injection, fuel treatment and cleaner as opposed to just cleaner etc. It gets very confusing when these products overlap in their use. Thanks in advance