Sta-Bil vs Seafoam: A Detailed Comparison Between These Two

Stabil vs Seafoam is a common comparison that rises curiosity in the minds of many new car owners. These are two popular fuel stabilizers designed to protect your fuel system and keep fuel fresh, and they are both premium-grade fuel stabilizers designed to prolong engine life.

Stabil vs Seafoam

However, many people don’t know the differences between the two stabilizers. We’ll explore these differences in this guide and also highlight the unique features, advantages, and potential disadvantages of the two stabilizers.

Features Sta Bil Seafoam
Fuel Ratio One ounce to 2.5 gallons One ounce to one gallon
Product Dimensions 10.2 x 4.6 x 2.9 inches 2.75 x 7.5 x 2.75 inches
Manufacturer Gold Eagle Co. Seafoam
Duration 360 Protection (12 months)

Storage (24 months)

24 months
Item weight 1.89 pounds One pound
Upper Cylinder Lubrication No Yes
Suitable for crankcase oil No Yes


What Are the Differences Between Sta Bil and Seafoam?

The main difference between Sta Bil and Sea Foam is that Sta Bil is a glycol-based fuel stabilizer, while Sea Foam is a petroleum-based fuel stabilizer. Sta-Bil works by creating a thin layer of film over the fuel, while Sea Foam mixes with fuel.

Another difference between the two is that Sea Foam contains detergents, while Sta Bil does not contain any detergent. This implies that cleaning with Sta Bil, unlike Sea Foam, won’t leave any residue. Both fuel stabilizers have a range of other benefits they offer, and they are designed for different purposes. To help you understand their uniqueness, we’ll go in-depth into their differences.

– Level of Efficiency

One of the prominent differences between the two stabilizers is their level of efficiency in removing ethanol. Ethanol is harmful to engines, and it has been proven to cause severe and permanent damage to engines. It’s important to get effective ethanol treatment, and this is where fuel stabilizers like Sta Bil and Seafoam are really helpful. Both fuel stabilizers can effectively prevent damage caused by ethanol.

Sta Bil is designed to prevent problems caused by ethanol to further increase engine performance. The stabilizer also helps to enhance mileage economy at every fill-up, thereby increasing fuel economy. Seafoam also offers an increase in fuel economy because it helps remove dirt from the engine system.

In addition, Sta Bil creates a bond with the fuel to keep it clean and fresh, while Seafoam protects key parts within the engine without causing any harm to the oxygen sensors.

– Lubricating Power

As a petroleum-based cleaner, Seafoam can be used in passages, carburetor jets, and injectors. However, most people don’t know these potential applications. The fuel stabilizer can dissolve oil residue, gum, and varnish and acts as a lubricant for upper cylinders. Seafoam can also be applied in evaporative systems and engines to keep them clean.

On the other hand, Sta Bil focuses on profitability and productivity. It is designed with features like condensation management and prolonged durability. The fuel stabilizer also provides coatings for different vehicles, including heavy-duty vehicles, marine vessels, and more.

– Duration

Another factor that sets the two apart is the duration of stability they provide when added to fuel. It’s mostly stated that station gasoline can stay stable for up to 6 months, but in reality, the level of protection does not always last long. There are reports from lawnmower and boat engine owners about corrosion and leaking carburetors after leaving fuel in them for an extended period.

In general, Sta Bil storage fuel stabilizer can protect for up to 24 months, while Sta Bil 360 stabilizer offers protection for up to 12 months. On the other hand, Sea Foam fuel stabilizer is designed to protect for 24 months, but this depends on the concentration of the stabilizer. It’s important to note the duration of the fuel stabilizer, especially if you plan to store the fuel for a long time.

– Weather Compatibility

It’s not advisable to use Sta Bil in cold weather as this will not allow it to mix properly with gas. Doing this can lead to the buildup of gum in the carburetor, thereby causing hurdles within the engine system. This is generally a temporary problem, but it can take a while for your vehicle to hit the road again. If you live in cold regions, it’s advisable to consider using an alternative fuel stabilizer.

On the other hand, Seafoam is a powerful fuel additive that works fine even during cold and icy seasons. With Seafoam, you can keep your engine running smoothly without the fear of gum accumulating within your fuel systems. Seafoam is a more environmentally friendly option than Sta-Bil fuel stabilizer, and you can rest assured that it won’t cause harm to your engine.

– Stabilizer-Fuel Ratio

This is an important distinguishing feature to note because the amount of fuel stabilizer you use has a direct impact on the price and quantity of the stabilizer. For a 12-month storage period, the fuel-stabilizer ratio varies for each type. With Seafoam, the stabilizer-fuel ratio is one ounce per gallon of fuel, while that of Sta-Bil storage fuel is one ounce per 2.5 gallons of fuel.

Sta-Bil 360 protection on the other hand is one ounce per five gallons. This implies that Sta-Bil 360 Protection is five times more effective than Seafoam and two times more effective than Sta-Bill Storage fuel stabilizer.

What Are Sta Bil’s Characteristics and Specifications?

Sta-Bil’s characteristics and specifications are that it’s a glycol-based fuel stabilizer. It keeps air and moisture out by creating a protective layer over the fuel, allowing the fuel to stay good even when stored for up to two years. The fuel can then be used for gas engines after storage.

When storing fuel using Sta Bil, it’s important to ensure that the gas tank stays still. This is because the thin film can break if the gas tank is moved or jostled vigorously. Also, after the seal breaks, it doesn’t reseal unless the stabilizer is added again.

Key Features of Sta Bil

– Sta Bil Overview

Stabil is a reliable and trusted fuel system treatment and additive that currently ranks as number one in America today. The brand was established in 1932, and it has waxed strong since then. However, in 1986, Gold Eagle bought the brand. Stabil is designed to preserve fuel in your fuel tank for months, which is more than the shelf life limitation of gasoline.

The fuel stabilizer offers different products, with Stabil 360 Protection and Stabil Storage being the most popular. Stabil Storage works by removing water from the fuel to keep the tank from rusting and prevent corrosion. It has a little detergent, allowing it to effectively clean fuel carburetors and fuel injectors to further guarantee high performance.

Apart from being applied to vehicle engines, it’s worth noting that the fuel stabilizer can be used in motorcycles, outdoor equipment, lawnmowers, and boats. Basically, it is widely known for its ability to enhance the smooth starting of the engine, in addition to preserving fuel in the tank. Also, Stabil can prevent the buildup of gum or varnish, as well as prevent fuel degradation.

– Using Stabil Fuel Stabilizer

Sta-Bil stabilizer can be used in any gasoline equipment or vehicle you intend to store for 30 days or more. You can also use the stabilizer in different types of gas, including ethanol-based fuel. After adding the stabilizer, it’s important to leave the engine running for at least five minutes to facilitate the treatment of the entire fuel.

If you plan to store the gasoline in a can, it’s important to first fill the can with fresh fuel before adding the right amount of the stabilizer. In the case of outdoor equipment like snowblowers, leaf blowers, and lawnmowers, first fill up a can with fuel before adding Sta-Bil. After that, you can then fill it into the outdoor equipment and leave it to run for up to five minutes before storing it.

– Benefits of Using Stabil

The benefits of using StaBil stabilizer include the following:

  • It is suitable for application on non-ethanol and ethanol fuels.
  • It improves fuel economy.
  • It offers fuel stabilization for up to two years.
  • It has impressive cleaning efficiency for carburetor and injector.
  • It prevents sludge and varnish formation and engine and fuel tank corrosion.

However, it’s essential to note that you cannot use the fuel stabilizer for diesel fuel engines, and it does not have an indefinite lifespan.

What Are Seafoam’s Characteristics and Specifications?

Seafoam’s characteristics and specifications are that it is a petroleum-based fuel stabilizer and cleaner. It is mixed with fuel, which makes it sensitive to movement. You can use the stabilizer for a range of equipment, with the assurance that it will preserve your fuel for two years.

Key Properties of Seafoam

The unique thing about Sea Foam is that you can use it for both diesel and gasoline fuel engines. Another function of the stabilizer is that it can serve as a lubricant for different engine parts.

– Seafoam Overview

Seafoam is among the most popular stabilizers that vehicle owners use in different parts of the world. The product is also applied in many ways in lawnmowers, boats, and other equipment. Seafoam first gained entry into the market in 1942 after its introduction by Fred Fandrei. Fred was a trained salesman within the industry, and this was a perfect starting point for growth and expansion.

The stabilizer was designed to fight different contaminants that can alter the performance of a vehicle. This also helps in preventing problems resulting from stale fuel. In addition to being a stabilizer, it also offers effective cleaning to further boost engine efficiency and performance.

Seafoam works by preventing gum or varnish formation and resisting evaporation. The stabilizer also helps clean the carburetor and injector while maintaining the ignition of your engine.

– Using Seafoam Fuel Stabilizer

Using Seafoam for motor treatment works fine for diesel and gasoline fuel. Regular fuel maintenance is achieved by adding an ounce per gallon, while cleaning requires two ounces per gallon. There are other recommendations to note when using Seafoam for fuel treatment.

If you’re using it for trucks and cars, it’s important that you apply the stabilizer after every 3,000 miles. Smaller engines require that you add the stabilizer every time you refuel the engine. In cases where it’s for an engine you use regularly, you can add the stabilizer every three months.

– Benefits of Using Seafoam

The benefits of using Seafoam stabilizer include the following:

  • It is easy and safe to use.
  • It cleans both the carburetor and injector.
  • It improves fuel economy.
  • It provides fuel stabilization for up to two years.
  • It is perfect for diesel and gas blends.

Despite these benefits, there are a few things to note about the stabilizer. For example, it’s not suitable for use on GDI engines, and it has the potential to damage your oxygen sensors. In addition, there’s also the possibility for the stabilizer to reduce the viscosity of the oil.

What are the main differences between using Sta-Bil and Seafoam?

When comparing Sta-Bil and Seafoam, it’s essential to understand the difference between 15 tint and 20. Sta-Bil is primarily used as a fuel stabilizer, while Seafoam is a fuel system cleaner and stabilizer. Both products aim to prevent fuel degradation, but they have distinct functions. Additionally, 15 tint refers to a lighter shade of window tint compared to 20, which is slightly darker. The variance in percentages determines the level of light transmission and heat rejection for car windows.

Which Fuel Additive is Better: Sta-Bil or Seafoam?

When it comes to choosing between Sta-Bil and Seafoam as fuel additives, there is no direct correlation to the keyword “duralast platinum vs gold car battery“. However, both Sta-Bil and Seafoam can provide benefits to your vehicle’s fuel system. Sta-Bil is primarily used to prevent fuel deterioration and enhance fuel stability during storage. On the other hand, Seafoam is known for its ability to clean fuel injectors and remove carbon deposits. Ultimately, your choice should depend on your specific needs and preferences.


Fuel stabilizers are important, and it’s important to ensure that you’re using the right brand for your engine. Two of the most popular fuel stabilizers to know are Sta Bil and Seafoam, but they are not completely the same products. We have highlighted the key things to know in this Sta Bil vs Seafoam comparison so you can know their main differences and choose the best one according to your needs.

In general, Sta Bil is a cheaper and more economical brand to buy because you only need one ounce for every 2.5 gallons of fuel, unlike Seafoam, which uses one ounce for every gallon of fuel. However, you can use Seafoam on both diesel and gas blends, while Sta Bil can only be used on gas engines.

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