Aviation Leaded Antiknock Mixture from Mexico
Specialized antiknock preparation with lead compounds for 100LL avgas (low-lead aviation gasoline) to suppress detonation in piston aircraft engines. HTS 3811.11.5000 covers this as 'other' lead-based antiknock for mineral oils used in hydraulic or lubricating purposes akin to gasoline.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Include FAA or ICAO specifications in documentation to justify aviation exemption from lead bans
• Test for exact lead content to match statistical reporting breakpoints
• Avoid misdeclaration as automotive use to prevent seizure under fuel regulations