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HSChapter 38
U.S. exports of lubricating oil additives (non-petroleum-based) (HS 381129) totaled $28.7M in July 2026.
Importers of Lubricating Oil Additives (Non-Petroleum-Based) paid $925K in duties in July 2026 — an effective duty rate of 15% on $6.0M in dutiable value, based on actual customs collections rather than the published tariff schedule. Lubricating Oil Additives (Non-Petroleum-Based) imports of $15.7M in July 2026 ran 14% above the year-to-date monthly average of $13.8M.
Last updated: July 2026 dataSynthetic and non-petroleum-based lubricant additives — including those carried in polyalphaolefin, ester, or glycol bases — are classified under 3811290000 and serve high-performance applications in aerospace, automotive, and industrial machinery where mineral oil carriers are unsuitable. Canada and Mexico together reflect substantial North American supply-chain integration, with South Korea, France, and Germany rounding out the top sources and pointing to the advanced chemical manufacturing capabilities required for synthetic additive technology. Importers should carefully document the base fluid composition, as the boundary between this heading and 381121 (petroleum-oil-containing additives) is a frequent classification dispute.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
207 shipments/mo
A supplier-provided safety data sheet (SDS) or technical data sheet clearly identifying the base fluid as synthetic (e.g., polyalphaolefin, ester, or polyalkylene glycol) with no petroleum or bituminous mineral oil content is the primary supporting document. A chemical composition certificate or letter of conformance from the manufacturer can further substantiate the classification in the event of a CBP inquiry.
Canada and Mexico are the leading suppliers under this heading, and shipments from both countries may qualify for preferential tariff treatment under USMCA, provided the goods meet the applicable rules of origin — typically a tariff classification change or regional value content requirement. Importers should obtain a valid USMCA certification of origin from the supplier and retain it for the required recordkeeping period.
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Subheading 2 of 5 in heading 3811
Subheading 381129 · $15.7M of $81.2M
ImportsExports
Imports
$15.7MYoY · Pro
Exports
$28.7MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
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 |
|---|---|---|---|---|---|
| 3811290000 | Add for Lub Oils, Ex Those With Petrol Oil Etc | $15.7M | 5.89% | 38.09% | $925K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 3811290000 | Add for Lub Oils, Ex Those With Petrol Oil Etc | $28.7M |
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.
Exports · July 2026
destination
France and Belgium together take 45% of it.
customs district
origin
entry
rate provision · imports
61.9% enters free of duty; the effective duty rate is 5.89%.