Our #1 Motor Medic pick
Top-ranked Fuel System Cleaner in our Motor Medic lineup, scored independently on effectiveness, health, and environmental impact. No paid placements.
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Motor Medic is a maintenance-chemical line covering engine flushes, oil and fuel additives, and fuel-system cleaners. The brand traces back to Radiator Specialty Company and is now owned and manufactured by Niteo Products, LLC of Hernando, Mississippi, which also owns the Gunk and Liquid Wrench brands. Several Motor Medic SKUs — including the M2616 Complete Fuel System Cleaner — are sold under both the Motor Medic and Gunk names with the same formula.
The products are widely distributed through Amazon, auto-parts retailers, and hardware stores. Niteo publishes current OSHA HazCom safety data sheets for the line through its SDS portal, and the fuel-system products are positioned as pour-in treatments for cleaning injectors, intake valves, and combustion-chamber deposits rather than premium detailing chemistry.
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As an Amazon Associate I earn from qualifying purchases. Full disclosure