Marvel MARV014R Mystery Oil Fuel and Engine Oil Additive - 1 Gallon

Marvel Mystery Oil (MARV014R) is a versatile, multi-use fuel and engine oil additive trusted by automotive, marine, and powersports enthusiasts for decades. This 1-gallon jug delivers comprehensive engine protection by cleaning, lubricating, and fortifying critical engine components that standard motor oil alone cannot reach.

Added to Fuel:

• Cleans and lubricates fuel injectors, carburetors, and the upper cylinder area
• Reduces and prevents varnish and gum buildup that can block injectors and carburetor jets
• Extends spark plug life by creating a cleaner-burning cylinder environment and reducing carbon deposits
• Improves fuel economy by reducing internal engine friction
• Compatible with gasoline and diesel fuels — use 4 oz per every 10 gallons of fuel at each fill-up

Added to Engine Oil:

• Prevents valve sticking and clatter by breaking down harmful carbon and sludge deposits
• Fortifies both conventional and synthetic motor oils against breakdown from extreme temperatures
• Promotes easier cold-weather starting with an extremely low pour point of -65°F
• Eliminates oil congealing at low temperatures
• Prevents and removes sludge buildup in both new and older engines
• Add at every oil change — replace one quart of engine oil with Marvel in a standard 5-quart system

Additional Uses:

• Safe and effective for use with all marine engines — inboard and outboard
• Compatible with 2-cycle engines, automatic transmissions, and power steering units
• Safe to mix with other oil additives and lubricants

Key Specifications:

• Volume: 1 Gallon (128 oz)
• Fuel Treatment Coverage: Up to 320 gallons
• Flash Point: 128°F
• Freezing Point: -60°F
• Specific Gravity: 0.876
• Composition: Petroleum Distillates (Hydrotreated Heavy Naphthenic & Stoddard Solvent), Tricresyl Phosphate

Note for Diesel Users: This additive does not comply with federal low sulfur content requirements for use in model year 2007 and newer diesel motor vehicles.