HS 3811 – 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.
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.
Subheadings
Child tariff lines and MFN rates
| HS code | Description | MFN rate |
|---|---|---|
| 3811-11 – Based on lead compounds | MFN Free | |
| 3811-11-00-00 | Based on lead compounds | Free |
| 3811-19 – Other | MFN Free | |
| 3811-19-00-00 | Other | Free |
| 3811-21 – Containing petroleum oils or oils obtained from bituminous minerals | MFN Free | |
| 3811-21-00-10 | Mixtures containing zinc dialkyl dithiophosphate | Free |
| 3811-21-00-90 | Other | Free |
| 3811-29 – Other | MFN Free | |
| 3811-29-00-00 | Other | Free |
| 3811-90 – Other | MFN Free | |
| 3811-90-00-10 | Additives for gasoline | Free |
| 3811-90-00-90 | Other | Free |
Top importers in this heading
41 Canadian companies imported goods under heading 38.11 according to the CBSA Canadian Importers Database, 2023 data.
Most frequent importers
- AFTON CHEMICAL CANADA CORPORATION - Ontario - 3 codes
- UNIVAR SOLUTIONS CANADA LTD. - Ontario - 3 codes
- BASF CANADA INC. - Ontario - 2 codes
- CANADIAN ENERGY SERVICES LP - Alberta - 2 codes
- ENERGIZER CANADA INC - Ontario - 2 codes
- LUBRIZOL CANADA LIMITED - Ontario - 2 codes
- NALCO CANADA ULC - Ontario - 2 codes
- PETRO-CANADA LUBRICANTS INC. LUBRIFIANTS PETRO-CANADA INC. - Ontario - 2 codes
- WAKEFIELD CANADA INC. - Ontario - 2 codes
- ARCHOIL, INC. - Connecticut - 1 codes