---
title: "3811.90 – Anti-knock preparations… › Other: Canada tariff & duty rates"
description: "Every Canadian tariff classification under HS 3811.90: Anti-knock preparations, oxidation inhibitors, gum inhibitors, viscosity improvers, anti-corrosive…"
canonical: "https://www.adhocs.ca/hs-codes/3811.90"
---

# 3811.90 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 › Other

Up: [HS codes](https://www.adhocs.ca/hs-codes) › [Chapter 38](https://www.adhocs.ca/hs-codes/38) › [3811](https://www.adhocs.ca/hs-codes/3811)

2 classifications. Each 10-digit code links to its page, with its rate under every tariff treatment.

- [3811.90.00.10](https://www.adhocs.ca/hs-codes/3811.90.00.10) Additives for gasoline
- [3811.90.00.90](https://www.adhocs.ca/hs-codes/3811.90.00.90) Other

## Other subheadings in this heading

- Next: [3811.11](https://www.adhocs.ca/hs-codes/3811.11.00.00) Based on lead compounds

[Source: CBSA Customs Tariff](https://www.cbsa-asfc.gc.ca/trade-commerce/tariff-tarif/menu-eng.html).