No. 4 Diesel Blend Fuel Oil (High Sulfur)
Blended fuel oil combining diesel distillates and residuals to achieve No. 4 specs: API >25°, 45-125 SUS viscosity, sulfur >500 ppm, for off-highway diesel engines. HTS 2710.19.11.25 covers this as distillate fuel oil for heavy machinery.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If sulfur ≤15 ppm
Ultra-low sulfur versions classify under environmental compliance subheadings.
If light oil distillates
90%+ distilling at 210°C qualifies as light oils, not heavy fuel.
If lubricity-enhanced
Heavy lubricant additives change it to lubricating preparations.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Differentiate from on-road diesel; certify as non-highway use per EPA to match fuel classification
• Test cetane index if blended; low cetane may require reclassification review
• Avoid retail packaging; bulk tanker imports simplify duty assessment
Related Products under HTS 2710.19.11.25
No. 4 Fuel Oil (High Sulfur)
A medium-weight distillate fuel oil derived from petroleum refining, testing 25 degrees A.P.I. or more with Saybolt Universal viscosity between 45-125 seconds at 37.8°C, containing over 500 ppm sulfur. Classified under HTS 2710.19.11.25 due to its specific gravity, viscosity, and sulfur content meeting the criteria for No. 4-type fuel oils used in industrial heating.
Blended No. 4 Heating Oil (High Sulfur)
A blended distillate fuel oil for commercial heating systems, consisting of >70% petroleum oils with API ≥25°, viscosity 45-125 SUS at 37.8°C, and sulfur >500 ppm. Fits HTS 2710.19.11.25 as a residual/distillate blend designed for medium boilers and industrial furnaces.
Industrial No. 4-Type Fuel Oil (>500 ppm S)
Petroleum distillate fuel for industrial burners and generators, with Saybolt viscosity 65 SUS average, API 28°, exceeding 500 ppm sulfur content. HTS 2710.19.11.25 applies precisely to this No. 4 specification for non-road heavy equipment and factory heating.
High-Sulfur Bunker Grade No. 4 Fuel
A No. 4 specification bunker fuel for marine auxiliary engines and port generators, featuring >500 ppm sulfur, 25-30 API, and 90 SUS viscosity at 100°F. Meets HTS 2710.19.11.25 for distillate/residual fuels used in stationary marine applications.
Commercial Boiler No. 4 Fuel Oil (>500 ppm S)
Distillate fuel oil formulated for multi-burner commercial boilers, with precise 50-100 SUS viscosity, 27 API gravity, and sulfur content over 500 ppm. Precisely matches HTS 2710.19.11.25 for No. 4-type residual fuels in heating applications.