Berryman B 12 Chemtool Fuel System Cleaner with H.E.S.T. (High Energy Solvent Technology) 0116 Advance Auto Parts Berryman B 12 Chemtool 15 Ounce Fuel Treatment 0116 O'Reilly Auto Parts Bob This stuff is the best gas treatment that you can use. I've tried other gas treatments,they don't work as good as this stuff,this stuff works great! Try it it's under Dr. prescribed B12 injections. Pharmacy only gave me vials. Where do you get your needles and syringes? What size?? Where do I inject? : r B12_Deficiency Max Clean Fuel System Cleaner Royal Purple