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Marine Grez-Off® Heavy Duty Degreaser


Features and Benefits:

#1 Rated Marine Degreaser by Powerboat Reports. A biodegradable, non-solvent heavy-duty degreaser that easily cuts through oil, grease and grime. Cleans and dissolves heavy soils on inboard & outboard motors, machinery and dock equipment. Also recommended for bilge cleaning. Marine Grez-Off® is VOC compliant, non-flammable and non-combustible.


  • Some surfaces such as aluminium alloys, plastic or painted surfaces are inherently sensitive to alkaline cleaners.
  • Spot test on ALL surfaces before use.
  • Do not use on motorcycles or glass.
  • Use with adequate ventilation. Do not inhale mist.
  • The use of safety glasses and rubber gloves is recommended.
  • These directions must be followed or damage may result.

For Cleaning:

  • Before degreasing, be sure that all surfaces are cool to the touch. Do not apply in direct sunlight or if air temperature is above 100°F.
  • Spray MARINE GREZ-OFF full strength onto the cool, pretested surface to be degreased.
  • Allow MARINE GREZ-OFF to penetrate the soil. NEVER allow MARINE GREZ-OFF to dry on any surface. Stubborn soils may require brushing or a second application.
  • Immediately rinse with water until no sudsing is noticeable.

Suggested Applications: Inboard and outboard motors, machinery, and dock equipment.

Suggested Applications: Inboard and outboard motors, bilges, machinery, docks and mooring equipment, trailers and tools.

View Marine Grez-Off® Heavy Duty DegreaserSDS Here