GPP Licensing Program

Engine Manufacturer's Role in the Gasoline Protection Program™ (GPP)

The Gasoline Protection Program™ (GPP) was initiated by the NMMA and its boat engine manufacturer members in response to an identified need and concerns with product quality in the marketplace. The program ensures additive products that meet the GPP specification are available to boat owners.

Providing boat owners with the knowledge and product availability to properly care for their engines is of the utmost importance to the NMMA and its members.

The NMMA encourages boat manufacturers to include information regarding the Gasoline Protection Program™ in their operator’s guides, owner’s manuals, and/or service manuals to better communicate the benefits and use of NMMA certified gasoline additive products. GPP certified products are tested to ensure they meet the standard and are audited for quality. Tests related to fuel stabilization, corrosion, metals analysis, and preventing water uptake into fuel are included in the specification. For guidance with OEM communication materials, please contact CQA or the NMMA at

Engine and boat manufacturers may announce the program to their dealership networks in the spring of 2020. 

More information is available at