3811.21.00.00
Containing petroleum oils or oils obtained from bituminous minerals
Antiknock 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: Additives for lubricating oils
Duty rates
Column 1 (General / MFN)
6.5%
Column 2 (Non-NTR)
60%
Column 1 (Special / FTA)
Free
Eligible
The rates above are statutory column rates. Trade remedies in Chapter 99 (Section 301, 232, IEEPA, reciprocal) and FTA preferences can change the duty owed on a given entry — see below.
Trade measures (Chapter 99)
9903.03.01
The duty provided in the applicable subheading + 10%
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Effective from February 24, 2026 through July 24, 2026
9903.03.02
The duty provided in the applicable subheading
Articles the product of any country that (1) were loaded onto a vessel at the port of loading and in transit on the final mode of transit prior to entry into the United States, before 12:01 a.m. eastern standard time on February 24, 2026; and (2) are entered for consumption, or withdrawn from warehouse for consumption, before 12:01 a.m. eastern standard time on February 28, 2026
Effective from February 24, 2026 through July 24, 2026
9903.03.03
The duty provided in the applicable subheading
Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Effective from February 24, 2026 through July 24, 2026
9903.03.04
The duty provided in the applicable subheading
Articles the product of any country, as provided for in subdivision (aa)(iii) of U.S. note 2 to this subchapter
Effective from February 24, 2026 through July 24, 2026
9903.03.05
The duty provided in the applicable subheading
Articles of civil aircraft (all aircraft other than military aircraft); their engines, parts and components; their other parts, components and subassemblies; and ground flight simulators and their parts and components of any country, provided for in subdivision (aa)(iv) of U.S. note 2 to this subchapter
Effective from February 24, 2026 through July 24, 2026
9903.03.06
The duty provided in the applicable subheading
Articles of aluminum, of steel, or of copper or derivative aluminum or steel articles; passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans, and cargo vans) and light trucks; parts of passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans, and cargo vans) and light trucks; medium- and heavy-duty vehicles; parts of medium- and heavy-duty vehicles; wood products; and semiconductor articles, of any country, as provided in subdivision (aa)(v) of U.S. note 2 to this subchapter
Effective from February 24, 2026 through July 24, 2026
9903.03.07
The duty provided in the applicable subheading
Articles the product of Canada, as provided for in subdivision (aa)(vi) of U.S. note 2 to this subchapter
Applies to origin: CA
Effective from February 24, 2026 through July 24, 2026
9903.03.08
The duty provided in the applicable subheading
Articles the product of Mexico, as provided for in subdivision (aa)(vii) of U.S. note 2 to this subchapter
Applies to origin: MX
Effective from February 24, 2026 through July 24, 2026
9903.03.09
The duty provided in the applicable subheading
Articles of textiles or apparel the product of Costa Rica, the Dominican Republic, El Salvador, Guatemala, Honduras or Nicaragua, as provided for in subdivision (aa)(viii) of U.S. note 2 to this subchapter
Applies to origin: CR, SV, GT, HN, NI, DO
Effective from February 24, 2026 through July 24, 2026
9903.03.10
The duty provided in the applicable subheading
Articles that are donations, by persons subject to the jurisdiction of the United States, such as food, clothing and medicine, intended to be used to relieve human suffering
Effective from February 24, 2026 through July 24, 2026
9903.03.11
The duty provided in the applicable subheading
Articles that are informational materials, including but not limited to publications, films, posters, phonograph records, photographs, microfilms, microfiche, tapes, compact disks, CD ROMs, artworks and news wire feeds
Applies to origin: IL
Effective from February 24, 2026 through July 24, 2026
9903.88.02
LIST_1
The duty provided in the applicable subheading + 25%
Except as provided in headings 9903.88.12, 9903.88.17, 9903.88.20, 9903.88.54, 9903.88.59, 9903.88.61, 9903.88.63, 9903.88.66, 9903.88.67, 9903.88.68, 9903.88.69, or 9903.88.70, articles the product of China, as provided for in U.S. note 20(c) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(d)
Applies to origin: CN
Effective from August 23, 2018
Related CBP rulings
Internal advice drawback claim RN1-00004720
The Lubrizol Corporation submitted a claim for petroleum substitution drawback on CBP Form (“CF”) 7551 under 19 U.S.C. §1313 (p)(2)(A)(iii). Section II of the CF 7551, which requires a claimant to identify the imported merchandise on which
The tariff classification of Lubrizol SulfrZol® 54
Our office requested additional information, including a sample for analysis. The additional information and sample was received on February 9, 2011 and forwarded to the Customs and Border Protection Laboratory for analysis. You described t
The tariff classification of Lubrizol® 3140J
The subject product, Lubrizol® 3140J is stated to be a mixture consisting of a hydrocarbon polymer of the polyisobutylene type in mineral oil. You also state that the product is a viscosity modifier additive for base stocks used to formulat
Application for Further Review of Protest 5301-08-100341; 19 U.S.C. § 1313(p); Chevron Oronite Company, LLC; Drawback; Petroleum
Chevron manufactures and exports an engine oil additive, classified under subheading 3811.21.00, Harmonized Tariff Schedule of the United States (HTSUS). A Certificate of Manufacture (CM) 200375, CBP Form 7552 shows that the engine oil addi
The tariff classification of Lubrizol® 426E
The instant merchandise is described as an additive for engine oils of certain recreational vehicles and chain saws. It is a mixture of polyether, alkaryl amine, alkyl imidazoline, glycerol monoleate, hydrocarbyl amine, and a carboxylic est
The tariff classification of a fuel additive and a fuel substitute from Canada
In your request letter and in our follow up phone conversation, you indicated that the instant product will be imported into the United States from Canada in one of the two formulations listed below. The first formulation will be a fuel add
The tariff classification of ITECSOL Antiknock and Corrosion Inhibitor Fuel Additives from Australia and Brazil
Additional information was requested from, and provided by you on December 16, 2008. This ruling is based on that correspondence and the initial request as stated below. The subject products are called ITECSOL AC500, AC600 and AC700. You in
The tariff classification of Cataclean from the United Kingdom
The subject product, Cataclean, is a fuel additive that will aid in the cleaning of the fuel system by improving cylinder fuel burning.
The tariff classification of fuel system cleaner from Japan
The product is a fuel system cleaner (part No. MZ100721EX) from Japan. The literature you submitted with your letter indicates that the fuel system cleaner will be imported in 200 ml bottles. It is designed for all types of petroleum engine
The tariff classification of Premium Sport "Standard" model engine fuel.
The tariff classification of Premium Sport "Standard" model engine fuel.
The tariff classification of "Polycoat 20-HWE" from Russia.
The tariff classification of "Polycoat 20-HWE" from Russia.
HQ 956585 revoked; PURADD FD-100, previously known as Pluradyne FD-100
The subject merchandise is PURADD FD-100 (the same merchandise as the subject of HQ 956585, Pluradyne FD-100). PURADD FD-100 is a clear, colorless, viscous liquid mixture consisting of about 52% polyisobutylene amine (PIB-CH2-NH2, hereinaft
Other codes in heading 3811
Duty by origin country
The rate above is the statutory base. Total landed duty depends on origin — see the calculated rate for 3811.21.00.00 from each major US trading partner.
Need to defend this classification?
TariffLens generates GRI reasoning, cites the right CBP rulings, and builds the audit trail you need for reasonable care.
Book a demo →