I used Techron in a lawnmower that kept stalling. Pretty basic. 5 to 1 compression flathead, meaning valves in block. Worked like a charm. Does Chevron in your neck of the woods add booze? In California, when gasoline is rated "Top Tier" the refineries do not have to add booze. In states where your legislature is bought and paid for by Archer Daniels Midland, then who the hell knows.
Combustion deposits cause running problems that have a list a lot longer than simple ping or knock. After wasting my money "-ON WHAT I-" consider to be, Snake Oil, Seafoam, I won't try it again even if it was given to me. LUCAS fuel additive seemed to work somewhat (murky results) but Techron made such a difference it was laughable. I look at it this way, you don't need to mortgage your house or risk anything but the price of a Double Burger with Fries to try it.