Part # 1112 Injector Cleaner Fuel Treatment November 28, 2017 Solutions Central › Category: Fuel Additives / Treatments › Part # 1112 Injector Cleaner Fuel Treatment 0 Vote Up Vote Down dwarner104 asked 7 years ago How often can/should the Chemtool Injector Cleaner Fuel Treatment, part # 1112, be used? 1 Answers 0 Vote Up Vote Down chemtooler Staff answered 7 years ago It is recommended to use Berryman Injector Cleaner Fuel Treatment (part #1112) once every 3-4 tanks. Please login or Register to submit your answer Username or Email Address Password Remember Me