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Official data Source: US Census Bureau international trade data Data through August 2026 · updated monthly

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HS 3811.11

Antiknock preparations, based on lead compounds

In short

  • The US imported $15.8M of this product over the 12 months to August 2026, up 2.7% on the year before.
  • United Kingdom is the largest supplier, with 98.2% of US imports; Germany is next, with 1.8%.
  • Duty paid averaged 10.0% of the value of imports in August 2026, up 6.8 points on a year earlier.
  • US exports were $3.9M over the last 12 months; the largest market is Canada, with 65.6%.

US imports, Aug 2026

$1.4M

↓ −23% vs Aug 2025

Last 12 months

$15.8M

↑ +2.7% vs the 12 months before

Average duty paid

10.0%

↑ +6.8 pts vs Aug 2025

Top supplier

United Kingdom

98.2% 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. 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.

Aug2025SepOctNovDecJan2026FebMarAprMayJunJulAugDuty ↑
Show the numbers
MonthUS imports
August 2025$1.8M
September 2025$532K
October 2025$1.7M
November 2025$538K
December 2025$513K
January 2026$1.1M
February 2026$2.8M
March 2026$578K
April 2026$2.5M
May 2026$2.7M
June 2026$478K
July 2026$973K
August 2026$1.4M

What changed

  • US imports were $1.4M in August 2026, up 43% from July 2026 and down 23% from August 2025.
  • Over the 12 months to August 2026 they totalled $15.8M, up 2.7% on the 12 months before.
  • Market shares barely moved since July 2026: no supplier with 3% or more of the market gained or lost 2 points.
  • Average price from United Kingdom stayed within 5% of July 2026, at $0.67/kg.
  • Duty paid by the main suppliers held within 2 points of July 2026.

US trade by year

US imports were $15.8M in the 12 months to Aug 2026, down 4.5% on the 12 months to Aug 2017. US exports were $3.9M, up 318%. 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.

2017201820192020202120222023202420252026Duty ↑
Show the numbers
PeriodUS imports
12 months to Aug 2017$16.6M
12 months to Aug 2018$14.0M
12 months to Aug 2019$12.8M
12 months to Aug 2020$17.6M
12 months to Aug 2021$13.9M
12 months to Aug 2022$15.9M
12 months to Aug 2023$15.6M
12 months to Aug 2024$16.9M
12 months to Aug 2025$15.4M
12 months to Aug 2026$15.8M
  • United Kingdom
  • Germany
  • United Arab Emirates
  • China
  • All countries
Share of US imports
Show the numbers
PeriodUnited KingdomGermanyUnited Arab EmiratesChina
12 months to Aug 2017100.0%0.0%0.0%0.0%
12 months to Aug 2018100.0%0.0%0.0%0.0%
12 months to Aug 201999.5%0.0%0.0%0.5%
12 months to Aug 202099.6%0.0%0.0%0.2%
12 months to Aug 202199.3%0.0%0.0%0.4%
12 months to Aug 202299.7%0.0%0.0%0.0%
12 months to Aug 202399.4%0.0%0.0%0.5%
12 months to Aug 202497.1%0.1%0.0%0.0%
12 months to Aug 202599.5%0.0%0.2%0.2%
12 months to Aug 202698.0%1.3%0.5%0.2%
Duty paid, % of value
Show the numbers
PeriodUnited KingdomGermanyUnited Arab EmiratesChinaAll countries
12 months to Aug 20170.0%n/an/an/a0.0%
12 months to Aug 20180.0%n/an/an/a0.0%
12 months to Aug 20190.0%0.0%n/a1.2%0.0%
12 months to Aug 20200.0%n/an/a0.0%0.0%
12 months to Aug 20210.0%0.0%n/a0.0%0.0%
12 months to Aug 20220.0%n/an/an/a0.0%
12 months to Aug 20230.0%0.0%n/a0.0%0.0%
12 months to Aug 20240.0%0.0%n/an/a0.0%
12 months to Aug 20251.6%n/a10.0%51.3%1.7%
12 months to Aug 20264.9%11.6%10.0%35.0%5.1%
PeriodUS importsDuty paidUS exports
12 months to Aug 2026$15.8M+2.7%5.1%+3.4 pts$3.9M+55%
12 months to Aug 2025$15.4M−8.9%1.7%+1.7 pts$2.5M−0.4%
12 months to Aug 2024$16.9M+8.6%0.0%0.0 pts$2.5M+5.1%
12 months to Aug 2023$15.6M−1.7%0.0%0.0 pts$2.4M−18%
12 months to Aug 2022$15.9M+14%0.0%0.0 pts$2.9M+25%
12 months to Aug 2021$13.9M−21%0.0%0.0 pts$2.3M−42%
12 months to Aug 2020$17.6M+37%0.0%0.0 pts$4.0M+59%
12 months to Aug 2019$12.8M−8.5%0.0%0.0 pts$2.5M+51%
12 months to Aug 2018$14.0M−15%0.0%0.0 pts$1.7M+79%
12 months to Aug 2017$16.6M0.0%$932K

Who supplies the US

August 2026. Small figures under each value are the change from August 2025.

CountryUS importsShareAverage priceDuty paidLast 13 months
United Kingdom$1.4M98.2%−0.7 pts$0.67/kg−24%10.0%+7.3 pts
Germany$25K1.8%new$42.60/kg10.0%
All countries$1.4M100.0%$0.68/kg−23%10.0%+6.8 pts

The 3 largest suppliers had 99.8% of US imports over the last 12 months.

How the market is shifting

United Kingdom lost the most share: 98.0% of US imports over the last 12 months, down from 99.5% in the 12 months before. 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.

  • United Kingdom
  • Germany
  • United Arab Emirates
  • China
  • All countries
Share of US imports
Show the numbers
MonthUnited KingdomGermanyUnited Arab EmiratesChina
September 2024n/an/an/an/a
October 2024100.0%0.0%0.0%0.0%
November 2024100.0%0.0%0.0%0.0%
December 2024100.0%0.0%0.0%0.0%
January 2025n/an/an/an/a
February 2025100.0%0.0%0.0%0.0%
March 2025100.0%0.0%0.0%0.0%
April 20250.0%0.0%0.0%82.2%
May 2025n/an/an/an/a
June 2025100.0%0.0%0.0%0.0%
July 202599.1%0.0%0.7%0.0%
August 202598.9%0.0%0.2%0.9%
September 202595.3%0.0%4.7%0.0%
October 202598.2%0.0%1.8%0.0%
November 202598.0%2.0%0.0%0.0%
December 202593.2%6.1%0.7%0.0%
January 202696.5%1.8%1.7%0.0%
February 202699.4%0.6%0.0%0.0%
March 202691.2%6.0%1.0%1.8%
April 202699.4%0.6%0.0%0.0%
May 202698.5%1.5%0.0%0.0%
June 2026100.0%0.0%0.0%0.0%
July 202696.8%1.7%0.0%1.5%
August 202698.2%1.8%0.0%0.0%
Duty paid, % of value
Show the numbers
MonthUnited KingdomGermanyUnited Arab EmiratesChinaAll countries
September 2024n/an/an/an/an/a
October 20240.0%n/an/an/a0.0%
November 20240.0%n/an/an/a0.0%
December 20240.0%n/an/an/a0.0%
January 2025n/an/an/an/an/a
February 20250.0%n/an/an/a0.0%
March 20250.0%n/an/an/a0.0%
April 2025n/an/an/a45.0%38.8%
May 2025n/an/an/an/an/a
June 20254.6%n/an/an/a4.6%
July 20252.4%n/a10.0%n/a2.5%
August 20252.7%n/a10.0%55.0%3.2%
September 202510.0%n/a10.0%n/a10.0%
October 20250.0%n/a10.0%n/a0.2%
November 20250.0%15.0%n/an/a0.3%
December 202510.0%15.0%10.0%n/a10.3%
January 20264.5%15.0%10.0%n/a4.8%
February 20263.6%15.0%n/an/a3.6%
March 20260.0%10.0%10.0%35.0%1.3%
April 20265.8%10.0%n/an/a5.9%
May 20263.4%10.0%n/an/a3.5%
June 202610.0%n/an/an/a10.0%
July 20269.8%6.0%n/a35.0%10.1%
August 202610.0%10.0%n/an/a10.0%

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.

  1. June 2026 · Duty paid: United Kingdom 3.5% → 10.0%, all countries 3.6% → 10.0%.

Where it enters the US

Main ports of entry over the 12 months to August 2026: US imports and share.

  1. Houston, TX$15.5M · 97.9%
  2. Philadelphia, PA$149K · 0.9%
  3. Newark, NJ$109K · 0.7%
  4. Cleveland, OH$52K · 0.3%
  5. Los Angeles, CA$15K · 0.1%

Where US exports go

US exports were $122K in August 2026, down 39% from August 2025, and $3.9M over the last 12 months, up 55% on the 12 months before. Fastest-growing market with 3% or more of US exports: Korea, South, up 1152%.

MarketLast 12 monthsSharevs 12 months before
Canada$2.6M65.6%+219%
Mexico$653K16.8%+36%
Korea, South$163K4.2%+1152%
Singapore$77K2.0%+14%
China$74K1.9%−68%
Venezuela$70K1.8%new
Argentina$69K1.8%new
Suriname$50K1.3%new
Other countries (17)$184K4.7%+145%
All countries$3.9M100.0%+55%

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; 73 have reported 2025 so far.

MarketImportsvs year beforeFrom the USUS share
Poland$12.5Min 2025+35%$00.0%
Netherlands$8.3Min 2025+14%$00.0%
Korea, South$5.1Min 2025+1.7%$4K0.1%
Brazil$4.6Min 2025+57%$00.0%
Australia$2.5Min 2025−34%$00.0%
Hungary$2.3Min 2025−8.4%$00.0%
Estonia$1.9Min 2025−51%$6770.0%
Canada$1.3Min 2025+57%$763K60.6%

The biggest market outside the US is Poland, which imported $12.5M of this product in 2025, none of it from the US.

The US supplies 60.6% of imports into Canada, but under 10% into Poland, the Netherlands and South Korea.

Of these, imports into Brazil grew fastest: up 57% from 2024 to 2025.

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.

ProductUS importsUS 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, not elsewhere specifiedHS 3811.19$4.4M$17.6M
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.
  • 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.

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