HS 3811-21 – Containing petroleum oils or oils obtained from bituminous minerals

Tariff data as of T2026-2, effective Sept 1, 2026, last verified Oct 21, 2026

Anti-knock preparations, oxidation inhibitors, gum inhibitors, viscosity improvers, anti-corrosive preparations and other prepared additives, for mineral oils (including gasoline) or for other liquids used for the same purposes as mineral oils. – Containing petroleum oils or oils obtained from bituminous minerals.