Sea Foam Fuel Additives & Storage Kits
Sea Foam Fuel Additives & Storage Kits: Proven Protection Since 1942
When it comes to keeping fuel systems clean and engines protected during storage, few names carry the credibility of Sea Foam. What began in the 1930s as one salesman's solution to fuel-related problems with his outboard motor has grown into one of the most trusted additive brands in North America. The cornerstone product — Sea Foam Motor Treatment — doubles as both a fuel system cleaner and a fuel stabilizer, making it a natural fit for the Fuel Additives & Storage Kits category.
What Sea Foam Does in the Fuel System
Sea Foam's fuel additives are designed to address the root causes of engine performance problems: gum, varnish, and carbon deposits that accumulate in fuel passageways over time. Whether your equipment sits through a long winter or runs year-round, these treatments work to liquefy residues that restrict fuel flow and cause rough running. The formula is petroleum-based and made from ingredients that are safe for all engine components — no harsh detergents that can damage seals or sensors.
For storage applications, Sea Foam Motor Treatment is added directly to the fuel tank before a vehicle, boat, lawn mower, or other small-engine equipment is put away for an extended period. The recommended approach is to add the treatment, then run the engine long enough to circulate the stabilized fuel through injectors or carburetor passageways, ensuring the entire fuel system is protected — not just the tank.
Why Sea Foam Stands Out for Fuel Storage
Unlike single-purpose stabilizers, Sea Foam's formula delivers multiple functions in a single pour. It stabilizes fuel to resist breakdown and ethanol-related moisture absorption, lubricates upper cylinders and fuel system components, and cleans fuel injectors and carburetor passages — all at once. This makes it especially useful for seasonal equipment like snowblowers, outboard motors, generators, and ATVs that may sit unused for months at a time.
- Fuel stabilization: Helps prevent fuel degradation and gum formation during storage
- Injector & carburetor cleaning: Dissolves deposits that cause hard starts and rough idle
- Upper cylinder lubrication: Lubricates fuel pumps, turbochargers, and related components
- Multi-engine compatibility: Safe for gas, diesel, 2-cycle, and 4-cycle engines
- Marine-ready: Effective in outboard and inboard marine engines
A Heritage Built on Simple, Effective Chemistry
Sea Foam has attracted a loyal following among mechanics, enthusiasts, and everyday drivers because the formula is straightforward and the results are consistent. There are no complex mixing ratios or specialized equipment required — just pour it into the fuel tank. For anyone who relies on seasonal or intermittent-use equipment, Sea Foam's fuel additives and storage treatments represent a low-effort, high-confidence way to protect an engine investment year after year.
Explore the full range of Sea Foam products or browse all Fuel Additives & Storage Kits to find the right solution for your engine.