Official data Source: US Census Bureau international trade data
Track this productAntiknock preparations, not elsewhere specified
In short
- The US imported $4.4M of this product over the 12 months to August 2026, down 8.7% on the year before.
- Italy is the largest supplier, with 66.8% of US imports; China is next, with 26.8%.
- Italy is the cheapest main supplier before and after freight and duty, landing at $5.06/kg.
- Duty paid averaged 18.5% of the value of imports in August 2026, down 10.5 points on a year earlier.
- Italy is gaining share: 19.8% over the last 12 months, up from 0.0%.
- US exports were $17.6M over the last 12 months; the largest market is Peru, with 16.9%.
US imports, Aug 2026
$378K
↑ +8.3% vs Aug 2025
Last 12 months
$4.4M
↓ −8.7% vs the 12 months before
Average duty paid
18.5%
↓ −10.5 pts vs Aug 2025
Top supplier
Italy
66.8% of US imports
US imports by month
The last 13 months, so the same month a year ago is on the left. August 2026 is highlighted.
Show the numbers
| Month | US imports |
|---|---|
| August 2025 | $349K |
| September 2025 | $357K |
| October 2025 | $165K |
| November 2025 | $189K |
| December 2025 | $418K |
| January 2026 | $250K |
| February 2026 | $374K |
| March 2026 | $213K |
| April 2026 | $493K |
| May 2026 | $570K |
| June 2026 | $688K |
| July 2026 | $284K |
| August 2026 | $378K |
What changed
- US imports were $378K in August 2026, up 33% from July 2026 and up 8.3% from August 2025.
- Over the 12 months to August 2026 they totalled $4.4M, down 8.7% on the 12 months before.
- Biggest moves in market share since July 2026: China up from 0.0% to 26.8%, Italy down from 90.2% to 66.8%.
- Average price from Canada rose 244% since July 2026, to $32.62/kg.
- Duty paid on imports from Italy fell from 16.5% to 10.0% of their value since July 2026.
US trade by year
US imports were $4.4M in the 12 months to Aug 2026, up 179% on the 12 months to Aug 2017. US exports were $17.6M, down 59%. Dotted lines mark lasting changes in duty paid, labelled with the supplier, or "Duty" when several moved; the tariff timeline lists each one with its notices.
Show the numbers
| Period | US imports |
|---|---|
| 12 months to Aug 2017 | $1.6M |
| 12 months to Aug 2018 | $1.2M |
| 12 months to Aug 2019 | $1.9M |
| 12 months to Aug 2020 | $1.4M |
| 12 months to Aug 2021 | $1.8M |
| 12 months to Aug 2022 | $2.4M |
| 12 months to Aug 2023 | $4.0M |
| 12 months to Aug 2024 | $2.5M |
| 12 months to Aug 2025 | $4.8M |
| 12 months to Aug 2026 | $4.4M |
- Belgium
- Italy
- United Kingdom
- Canada
- All countries
Show the numbers
| Period | Belgium | Italy | United Kingdom | Canada |
|---|---|---|---|---|
| 12 months to Aug 2017 | 0.0% | 2.9% | 19.4% | 32.1% |
| 12 months to Aug 2018 | 0.0% | 0.0% | 4.1% | 16.1% |
| 12 months to Aug 2019 | 0.0% | 0.0% | 6.1% | 27.8% |
| 12 months to Aug 2020 | 12.5% | 0.0% | 6.6% | 26.9% |
| 12 months to Aug 2021 | 10.2% | 0.0% | 6.2% | 14.2% |
| 12 months to Aug 2022 | 5.4% | 0.0% | 7.0% | 17.0% |
| 12 months to Aug 2023 | 2.5% | 0.0% | 5.2% | 24.5% |
| 12 months to Aug 2024 | 38.7% | 0.1% | 9.3% | 15.5% |
| 12 months to Aug 2025 | 43.7% | 0.0% | 6.9% | 2.3% |
| 12 months to Aug 2026 | 52.7% | 19.8% | 12.9% | 5.8% |
Show the numbers
| Period | Belgium | Italy | United Kingdom | Canada | All countries |
|---|---|---|---|---|---|
| 12 months to Aug 2017 | n/a | 6.5% | 6.5% | 2.7% | 5.3% |
| 12 months to Aug 2018 | n/a | n/a | 6.5% | 0.0% | 5.4% |
| 12 months to Aug 2019 | n/a | n/a | 6.5% | 0.0% | 4.8% |
| 12 months to Aug 2020 | 6.5% | n/a | 6.5% | 0.0% | 5.7% |
| 12 months to Aug 2021 | 6.5% | n/a | 6.5% | 0.0% | 5.6% |
| 12 months to Aug 2022 | 6.5% | n/a | 6.5% | 0.0% | 5.4% |
| 12 months to Aug 2023 | 6.5% | n/a | 6.5% | 0.0% | 5.7% |
| 12 months to Aug 2024 | 6.5% | 6.5% | 6.5% | 0.0% | 6.9% |
| 12 months to Aug 2025 | 10.8% | n/a | 7.3% | 0.0% | 12.0% |
| 12 months to Aug 2026 | 16.0% | 14.6% | 17.9% | 0.0% | 15.7% |
| Period | US imports | Duty paid | US exports |
|---|---|---|---|
| 12 months to Aug 2026 | $4.4M−8.7% | 15.7%+3.7 pts | $17.6M−21% |
| 12 months to Aug 2025 | $4.8M+91% | 12.0%+5.1 pts | $22.2M+2.2% |
| 12 months to Aug 2024 | $2.5M−37% | 6.9%+1.2 pts | $21.7M−9.6% |
| 12 months to Aug 2023 | $4.0M+65% | 5.7%+0.2 pts | $24.1M−21% |
| 12 months to Aug 2022 | $2.4M+37% | 5.4%−0.1 pts | $30.6M+2.8% |
| 12 months to Aug 2021 | $1.8M+24% | 5.6%−0.1 pts | $29.7M−46% |
| 12 months to Aug 2020 | $1.4M−26% | 5.7%+0.9 pts | $55.0M+2.5% |
| 12 months to Aug 2019 | $1.9M+63% | 4.8%−0.6 pts | $53.7M−0.6% |
| 12 months to Aug 2018 | $1.2M−25% | 5.4%+0.2 pts | $54.0M+26% |
| 12 months to Aug 2017 | $1.6M | 5.3% | $42.9M |
Who supplies the US
August 2026. Small figures under each value are the change from August 2025. Landed cost by origin, below, adds freight and duty to the price.
| Country | US imports | Share | Average price | Duty paid | Last 13 months |
|---|---|---|---|---|---|
| Italy | $253K | 66.8%new | $4.22/kg | 10.0% | |
| China | $101K | 26.8%−1.0 pts | $7.03/kg+4.3% | 44.0%−17.5 pts | |
| Canada | $24K | 6.4%new | $32.62/kg | 0.0% | |
| All countries | $378K | 100.0% | $5.04/kg+5.8% | 18.5%−10.5 pts |
The 3 largest suppliers had 85.5% of US imports over the last 12 months.
Landed cost by origin
What importers paid to land this product at a US port from each main supplier, June–August 2026: the price, freight and insurance to the first US port, and duty, per unit. Suppliers with 3% or more of these imports, cheapest landed first. Small figures under landed cost are the change from the same months a year earlier.
- Price
- Freight and insurance
- Duty
| Country | Price | Freight and insurance | Duty | Landed cost | Make-up |
|---|---|---|---|---|---|
| Italy | $4.30/kg | $0.17/kg4.1% of price | $0.59/kg13.8% of price | $5.06/kg | |
| Belgium | $4.83/kg | $0.18/kg3.8% of price | $0.80/kg16.5% of price | $5.81/kg+6.4% | |
| China | $7.03/kg | $0.35/kg4.9% of price | $3.09/kg44.0% of price | $10.47/kg−5.3% | |
| Canada | $18.37/kg | $0.54/kg2.9% of price | $0.00/kg0.0% of price | $18.91/kg | |
| All countries | $4.84/kg | $0.19/kg4.0% of price | $0.81/kg16.7% of price | $5.84/kg+0.9% |
Landed at a US port, Italy was cheapest, at $5.06/kg: 12.9% below Belgium.
How the market is shifting
Italy gained the most share: 19.8% of US imports over the last 12 months, up from 0.0% in the 12 months before. India lost the most: 0.1%, down from 27.7%. The charts show September 2024 to August 2026 for the 4 largest suppliers over the last 12 months. Dotted lines mark lasting changes in duty paid, labelled with the supplier, or "Duty" when several moved; the tariff timeline lists each one with its notices.
- Belgium
- Italy
- United Kingdom
- Canada
- All countries
Show the numbers
| Month | Belgium | Italy | United Kingdom | Canada |
|---|---|---|---|---|
| September 2024 | 53.5% | 0.0% | 9.0% | 0.0% |
| October 2024 | 39.8% | 0.0% | 1.9% | 31.2% |
| November 2024 | 30.5% | 0.0% | 3.4% | 0.0% |
| December 2024 | 38.6% | 0.0% | 0.0% | 9.2% |
| January 2025 | 12.5% | 0.0% | 0.0% | 0.0% |
| February 2025 | 74.3% | 0.0% | 7.3% | 14.8% |
| March 2025 | 48.6% | 0.0% | 51.4% | 0.0% |
| April 2025 | 43.2% | 0.0% | 0.0% | 0.0% |
| May 2025 | 51.7% | 0.0% | 0.0% | 0.0% |
| June 2025 | 86.5% | 0.0% | 4.1% | 0.0% |
| July 2025 | 47.4% | 0.0% | 4.4% | 0.0% |
| August 2025 | 44.7% | 0.0% | 0.0% | 0.0% |
| September 2025 | 47.8% | 0.0% | 40.1% | 0.0% |
| October 2025 | 10.5% | 0.0% | 77.8% | 11.7% |
| November 2025 | 35.6% | 0.0% | 56.1% | 6.7% |
| December 2025 | 16.1% | 0.0% | 31.0% | 2.3% |
| January 2026 | 80.9% | 0.0% | 0.0% | 16.6% |
| February 2026 | 93.8% | 0.0% | 3.7% | 2.5% |
| March 2026 | 54.8% | 40.8% | 0.0% | 4.4% |
| April 2026 | 91.6% | 0.0% | 0.0% | 8.4% |
| May 2026 | 49.7% | 31.3% | 8.0% | 9.8% |
| June 2026 | 83.7% | 13.7% | 0.0% | 1.4% |
| July 2026 | 2.4% | 90.2% | 0.0% | 7.4% |
| August 2026 | 0.0% | 66.8% | 0.0% | 6.4% |
Show the numbers
| Month | Belgium | Italy | United Kingdom | Canada | All countries |
|---|---|---|---|---|---|
| September 2024 | 6.5% | n/a | 6.5% | n/a | 15.3% |
| October 2024 | 6.5% | n/a | 6.5% | 0.0% | 4.5% |
| November 2024 | 6.5% | n/a | 6.5% | n/a | 6.5% |
| December 2024 | 6.5% | n/a | n/a | 0.0% | 5.9% |
| January 2025 | 6.5% | n/a | n/a | n/a | 10.3% |
| February 2025 | 6.5% | n/a | 6.5% | 0.0% | 5.5% |
| March 2025 | 6.5% | n/a | 6.5% | n/a | 6.5% |
| April 2025 | 6.9% | n/a | n/a | n/a | 13.9% |
| May 2025 | 16.5% | n/a | n/a | n/a | 12.9% |
| June 2025 | 16.5% | n/a | 16.5% | n/a | 16.5% |
| July 2025 | 16.5% | n/a | 16.5% | n/a | 16.5% |
| August 2025 | 16.5% | n/a | n/a | n/a | 29.0% |
| September 2025 | 15.0% | n/a | 20.5% | n/a | 17.2% |
| October 2025 | 15.0% | n/a | 16.5% | 0.0% | 14.4% |
| November 2025 | 17.7% | n/a | 20.7% | 0.0% | 18.8% |
| December 2025 | 17.0% | n/a | 16.5% | 0.0% | 15.4% |
| January 2026 | 17.0% | n/a | n/a | 0.0% | 14.1% |
| February 2026 | 12.9% | n/a | 0.0% | 0.0% | 12.1% |
| March 2026 | 16.5% | 16.5% | n/a | 0.0% | 15.8% |
| April 2026 | 17.1% | n/a | n/a | 0.0% | 15.6% |
| May 2026 | 16.5% | 16.5% | 16.5% | 0.0% | 14.9% |
| June 2026 | 16.5% | 16.5% | n/a | 0.0% | 16.3% |
| July 2026 | 16.5% | 16.5% | n/a | 0.0% | 15.3% |
| August 2026 | n/a | 10.0% | n/a | 0.0% | 18.5% |
Tariff actions touching this product
When the duty paid on this product changed and stayed changed, for its main suppliers and all countries, newest first, with the Federal Register notices that named the product in the 3 months before. Rates are medians of the 4 months either side, less any usual seasonal swing. A change shows what happened to duty paid, not why; read each notice for what it did.
- May–June 2025 · Duty paid: Belgium 6.9% → 16.5%, all countries 8.9% → 17.2%.
Where it enters the US
Main ports of entry over the 12 months to August 2026: US imports and share.
Where US exports go
US exports were $1.4M in August 2026, down 50% from August 2025, and $17.6M over the last 12 months, down 21% on the 12 months before. Fastest-growing market with 3% or more of US exports: Panama, up 378%.
| Market | Last 12 months | Share | vs 12 months before |
|---|---|---|---|
| Peru | $3.0M | 16.9% | +24% |
| Canada | $2.2M | 12.7% | −48% |
| United Kingdom | $1.5M | 8.3% | +61% |
| Mexico | $933K | 5.3% | −1.7% |
| Saudi Arabia | $897K | 5.1% | −34% |
| Guatemala | $626K | 3.6% | +34% |
| Panama | $574K | 3.3% | +378% |
| Bolivia | $485K | 2.8% | +45% |
| Other countries (85) | $7.4M | 42.1% | −31% |
| All countries | $17.6M | 100.0% | −21% |
Markets abroad
Each country's own import figures for this product, from UN Comtrade: the 8 biggest importers outside the US in the latest year each has reported, what they bought from the US, and the change from the year before. Values usually include freight and insurance to the importer's border, so they run a little above US export figures. Countries report a year or more late; 117 have reported 2025 so far. Where a country's figure for imports from the US is under half or over double what the US recorded exporting there that year, the US figure is shown under it.
| Market | Imports | vs year before | From the US | US share |
|---|---|---|---|---|
| Algeria | $150.0Min 2024 | n/a | $883 | 0.0% |
| Belgium | $25.1Min 2025 | −71% | $501 | 0.0% |
| Saudi Arabia | $13.8Min 2025 | +155% | $553KUS records $1.1M | 4.0% |
| Germany | $10.3Min 2025 | +31% | $120K | 1.2% |
| Uzbekistan | $10.1Min 2024 | +106% | $0 | 0.0% |
| Nigeria | $9.8Min 2025 | −13% | $7.8MUS records $85K | 80.0% |
| Oman | $9.6Min 2025 | −72% | $82K | 0.9% |
| Netherlands | $6.3Min 2025 | −58% | $72K | 1.1% |
The biggest market outside the US is Algeria, which imported $150.0M of this product in 2024, under 0.1% of it from the US.
Of these, imports into Uzbekistan grew fastest: up 106% from 2023 to 2024.
Related products
Other products under heading 3811: antiknock preparations and other additives for mineral oils (including gasoline) or for other liquids used for the same purposes as mineral oils. US trade over the 12 months to August 2026.
| Product | US imports | US exports |
|---|---|---|
| Additives for lubricating oils containing petroleum oils or oils obtained from bituminous mineralsHS 3811.21 | $572.0M | $1.86B |
| Prepared additives for mineral oils (including gasoline) or for other liquids used for the same purpose as mineral oils, not elsewhere specifiedHS 3811.90 | $119.7M | $902.2M |
| Additives for lubricating oils, not elsewhere specifiedHS 3811.29 | $158.8M | $291.8M |
| Antiknock preparations, based on lead compoundsHS 3811.11 | $15.8M | $3.9M |
About these figures
- Source: US Census Bureau international trade data, not seasonally adjusted, in US dollars. Retrieved November 3, 2026.
- US imports are general imports at customs value, which excludes freight and insurance. Exports are at free-alongside-ship value.
- Average price is customs value divided by quantity (kilograms), across all of the product's 10-digit lines.
- Duty paid is the duty Census calculates on each country's imports for consumption, as a share of their value. It moves with tariff changes, exemptions and the mix of goods within the product.
- Landed cost adds Census's import charges (freight, insurance and other costs of bringing the goods to the first US port) and calculated duty to the customs value, per unit, across the product's 10-digit lines. It leaves out antidumping and countervailing duties, customs fees and transport inland. Prices are averages across the goods within the code, so a lower one can mean cheaper goods, not the same goods for less.
- Markets abroad are each country's imports as it reports them to UN Comtrade, in US dollars, usually including freight and insurance. Countries report a year or more late and in their own edition of the HS codes, so one still on an older edition is missing for codes that changed in 2022.
- Census revises recent months, so figures can change slightly. These are estimates for research and planning, not customs or legal advice.