The Consumer Product Safety Commission issued an interpretive rule on Friday excluding fuel additives from the definition of "flammable liquid fuels."

The rule avoids approximately $545.7 million in annual compliance costs for manufacturers of fuel additive products. The present value of avoided costs ranges from approximately $3.8 billion to $10.7 billion over 10- and 30-year periods.

The Commission interprets "flammable liquid fuels" to exclude additives intended solely for improving engine performance, cleaning components, or similar purposes unrelated to creating heat or power. Portable containers intended solely for such fuel additives are not subject to the flame mitigation device requirements for portable fuel containers.

The interpretive rule does not impose any new legal obligations or substantive requirements on regulated entities. The Commission voted 3-0 to publish the notification. The rule is effective on the date of publication in the Federal Register.