</>Build with Tariff Intelligence|Programmatic access to tariff calculations and HS code classification.Explore Developer Resources →

Petroleum Oil Viscosity Improver for Gear Lubes from Mexico

Viscosity improver additive infused with petroleum oils for gear and transmission lubricants, maintaining performance under high shear. It qualifies for HTS 3811.21.00.00 as a prepared additive containing petroleum oils for mineral oil-based lubes.

Duty Rate — Mexico → United States

16.5%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico

Import Tips

Label containers with exact petroleum oil percentage and end-use; obtain prior CBP ruling for blends

Pitfall: over-dilution may classify as 2710 base oil