3811 · Antiknock 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:
This is a category heading rather than a rate line — pick one of the codes below to see its full duty stack.
Subordinate codes (5)
| Code | Description |
|---|---|
| 3811.11 | Based on lead compounds: |
| 3811.19.00.00 | Other |
| 3811.21.00.00 | Containing petroleum oils or oils obtained from bituminous minerals |
| 3811.29.00.00 | Other |
| 3811.90.00.00 | Other |
Frequently asked
- What does 3811 cover?
- Antiknock 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:. This is a heading-level category with several subordinate codes — open one to see its full duty breakdown.
- Where does this data come from?
- Codes and MFN base rates come from the full USITC HTS 2026 Rev.11 export. Section 301/232/122 surcharge mappings are approximated pending code-level review. Every rate carries a source_url and effective_from, so you can trace it back to the controlling notice.