Lucas Oil Deep Clean Fuel System Cleaner

Lucas Deep Clean uses a PEA-class detergent (monoalkylaryl alkoxylate aminated, 10-30% per SDS) targeting injector fouling, intake valve carbon, and combustion chamber deposits. PEA chemistry is well-studied for injectors and intake valves; combustion chamber coverage is the brand's claim, plausible at concentrate strength but without a product-specific independent test. Protocol is periodic: one 5.25 oz bottle per tank (up to 15 gallons) every 3,000 to 4,000 miles.

A good fit for gasoline-engine owners on a regular maintenance schedule who want a value-priced PEA-class treatment; most useful for those running non-Top Tier gasoline. Skip it if you always run Top Tier certified fuel -- that built-in detergent package already prevents deposit buildup. Skip it for engines with misfires or suspected injector failure -- those call for professional ultrasonic cleaning, not a pour-in additive. Diesel owners should look elsewhere; this is gasoline-only.

SDS §2 (DANGER): H304 may be fatal if swallowed and enters airways -- do not induce vomiting if ingested, seek medical attention. H315 and H319 indicate skin and eye irritation from concentrate contact. No respiratory H-code at mixture level; brief outdoor pours carry low inhalation risk, enclosed-space pours warrant ventilation. The product combusts in the engine; exhaust byproducts are the environmental endpoint.