High Viscosity Bunker Fuel (Biodiesel) from Mexico
Blended bunker fuel exceeding 125 SUS at 37.8°C, API under 25°, with biodiesel where petroleum oils form >70% basic constituents. Classified under HTS 2710.20.0520 for heavy residual fuels in shipping. Essential for slow-speed diesel engines.
Duty Rate — Mexico → United States
0%
Rate breakdown
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Use certified viscometers for 37.8°C testing; include density at 15°C on COA
• Pitfall: Temperature conversion errors in Saybolt readings cause misclassification