Liqui Moly Jectron Fuel Injection Cleaner

The active detergent in Jectron is not disclosed on the label, SDS, or any US Liqui Moly technical document — BITOG community discussion attributes the chemistry to PEA based on cross-regional parts-counter sources, but the brand does not confirm it in North America. Without that confirmation, the cleaning claim cannot be evaluated against a known chemistry class. Community evidence is positive: 4.7/5 across 6,000+ Amazon ratings and multiple BITOG threads with 3,000-mile follow-up reports. The brand's protocol is one 300 mL bottle per 25–75 L (7–20 gal) tank, repeated every 1,200 miles. Liqui Moly markets DIJectron as a separate product for direct-injection intake-valve carbon.

Best fit for port-injection gasoline owners running non-Top-Tier fuel who want a brand-trust pick with a long European enthusiast track record. Skip it if you always run Top Tier certified gasoline (the OEM detergent package already covers maintenance dosing). Skip it for direct-injection engines with intake-valve carbon symptoms — Liqui Moly itself positions DIJectron, not Jectron, for that case. Skip it for severe rough idle or stalling; professional ultrasonic cleaning is the right call there.

SDS §2 is DANGER — H351 (suspected carcinogen Cat 2, naphthalene driver), H304 (aspiration hazard), H336 (narcotic vapour effects), H226 (flammable liquid), and H412 (chronic aquatic toxicity). The Amazon listing carries a Prop 65 warning for a trace solvent component named in SDS §3. Lungs tier is recommended (Beyond SDS) based on the named aromatic carrier and H336. Do not induce vomiting if ingested — seek medical attention. The product combusts in the engine; exhaust byproducts are the environmental endpoint.