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Subheading 1 of 5 in heading 3811
Subheading 381121 · $57.6M of $81.2M
U.S. exports of lubricating oil additives containing petroleum or bituminous mineral oils (HS 381121) totaled $163.4M in July 2026.
Importers of Lubricating Oil Additives Containing Petroleum or Bituminous Mineral Oils paid $6.2M in duties in July 2026 — an effective duty rate of 16% on $39.8M in dutiable value, based on actual customs collections rather than the published tariff schedule. Lubricating Oil Additives Containing Petroleum or Bituminous Mineral Oils imports of $57.6M in July 2026 ran 14% above the year-to-date monthly average of $50.3M.
Last updated: July 2026 dataPetroleum-oil-containing lubricant additives — detergents, dispersants, viscosity-index improvers, and anti-wear packages blended into a mineral oil carrier — are classified under a single 10-digit line (3811210000) and are a critical input for finished engine oil and industrial lubricant formulations. France leads US import supply, followed by Mexico and Italy, reflecting the global footprint of major additive technology companies headquartered in Europe and their North American blending operations. Because these preparations contain petroleum-derived carrier oils, importers must confirm whether the petroleum content triggers any additional customs valuation or chemical reporting obligations.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
636 shipments/mo
The dividing line is whether the preparation contains petroleum oils or oils obtained from bituminous minerals as a component. If it does, classification falls under 381121; if the carrier or base is non-petroleum (e.g., synthetic ester or polyalkylene glycol), the preparation falls under 381129. This distinction is important because the two headings carry different tariff treatment, and misclassification is a common audit finding for lubricant additive importers.
While China does not appear among the top suppliers for this specific heading, any petroleum-oil-containing lubricant additive originating from China would need to be evaluated for Section 301 exposure. Importers sourcing from multiple origins should verify the country of origin of the additive concentrate itself, not just the blending location, as processing in a third country does not automatically confer a new origin.
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HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 3811210000 | Additives for Lub Oil Cont Petro/Bituminous Minerl | $57.6M | 10.84% | 69.20% | $6.2M |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 3811210000 | Additives for Lub Oil Cont Petro/Bituminous Minerl | $163.4M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
ImportsExports
Imports
$57.6MYoY · Pro
Exports
$163.4MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Exports · July 2026
destination
customs district
origin
entry
rate provision · imports
30.8% enters free of duty; the effective duty rate is 10.84%.