Berryman B-60 HIGH-MILEAGE FUEL SYSTEM REJUVENATOR (part #7516) is not intended to be used in such a manner. Instead, we recommend using either Berryman B-12 CHEMTOOL FUEL INJECTOR CLEANER (part #0116) or TOTAL ENGINE TUNE-UP (part #0316). 0116 is 100% strong solvent, costs less, and is more readily available. 0316 is a combination of solvents and detergents and will clean more of the system (including intake valves). Regardless of which product you use, be cautious of your rate of addition so you do not hydrolock the engine.