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Royal Purple Max-Boost from Japan

Octane booster and detergent package for racing fuels, containing metal deactivators and gum inhibitors. Covered by HTS 3811.90.00.00 as other additives for high-performance mineral fuels. Used in performance automotive and powersports applications.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

Import Tips

Manganese or lead content requires special EPA fuel waiver; racing-only labeling prevents road fuel restrictions; high flash point documentation for air shipment