Fuel System Cleaner and Diesel Guard

February 2019: This case was transferred to federal court. (Case No. 19-cv-241, W. D. WA.)

January 2019: A class-action lawsuit was filed against Additech, Inc. for allegedly falsely advertising that the fuel additives Fuel System Cleaner and Diesel Guard clean and prevent carbon buildup on an engine’s intake valve to provide various benefits – including “reduc[ing] emissions” and “increase[ing] mileage” – when, according to the complaint, the additives do not work as advertised in all vehicles. Plaintiffs claim that the products cannot provide the advertised benefits in vehicles with gasoline direct injection engines or diesel engines because the gasoline in these vehicles does not pass through the intake valves and manifolds. Plaintiffs also claim that the products do not remove all of the carbon buildup on intake valves in standard engines. (Lowry et al v. Additech, Inc., Case No. 19-2-00613-7, Washington State Court – King County)

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