How Long Can Gas Sit In A Snow Blower?

In this article, we will discuss how long gas can sit in a snow blower and what can happen if it sits for too long. We will also provide tips on how to prevent any potential issues with old gas in your snow blower. So, if you’ve been wondering about the lifespan of gas in your snow blower, keep reading!

Gas sitting in a snow blower can be a concern, especially during the off-season. If gas sits for too long, it can deteriorate and become less effective, leading to poor performance or even damage to your snow blower. However, the exact timeframe for how long gas can sit before causing problems can vary based on a few factors, such as the quality of the gas and the storage conditions. To prevent any issues, it’s generally recommended to use up any gas in your snow blower within one to two months and to use a fuel stabilizer if you anticipate a longer period of inactivity. With proper care and attention, you can ensure that your snow blower is always ready to tackle the snow when you need it!

What is a snow blower?

A snow blower is a machine used to remove snow from driveways, sidewalks, and other areas. It is a powerful device that can quickly clear large amounts of snow, saving significant time and effort compared to manual shoveling.

Snow blower types

There are different types of snow blowers available, including single-stage, two-stage, and three-stage models. Single-stage snow blowers are best suited for light snowfalls and are typically smaller and easier to maneuver. Two-stage snow blowers are more powerful and can handle heavier snowfalls, while three-stage models are the most robust and can tackle even the toughest snow.

Function of a snow blower

The primary function of a snow blower is to remove snow from surfaces. It uses an engine to power an auger, which scoops up the snow and throws it out through a chute. The auger may be made of metal or rubber, depending on the type of snow blower. Most snow blowers are self-propelled, meaning they do not require manual pushing.

Importance of proper maintenance

Proper maintenance is crucial for the optimal performance and longevity of a snow blower. Regular maintenance ensures that all components are in good working condition and reduces the risk of breakdowns during the winter season.

The role of gas in a snow blower

Why gas is used

Gasoline is used as a fuel source in most snow blowers because of its high energy density and availability. Gas-powered snow blowers provide sufficient power to handle various snow conditions. They are portable and do not require a nearby power source, allowing for more flexibility in clearing snow.

Gas types for snow blowers

When using a gasoline-powered snow blower, it is essential to use the correct type of gas. Most snow blowers use regular unleaded gasoline with an octane rating of 87. Some models may require higher octane ratings, so it is essential to refer to the manufacturer’s instructions. Using the wrong type of gas can affect the performance and potentially damage the engine.

Effects of stale gas

Gasoline can become stale over time, especially if left unused for an extended period. Stale gas can negatively impact the operation of the snow blower’s engine. It can cause starting difficulties, decreased performance, and even engine damage if not addressed promptly.

How Long Can Gas Sit In A Snow Blower?

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How long can gas sit in a snow blower?

The length of time gas can sit in a snow blower depends on various factors:

Factors affecting gas degradation

Gas degradation occurs due to the evaporation of volatile components and the oxidation of the remaining liquid. Factors such as temperature fluctuations, exposure to air, and the presence of contaminants can accelerate gas degradation. The quality of the gasoline and the presence of fuel stabilizers also play a role in how long the gas can sit without deteriorating.

Signs of gas degradation

There are several signs that gas has degraded:

  1. Strong odor: Gasoline that has gone bad often emits a foul smell, indicating that it is no longer suitable for use.
  2. Discoloration: Fresh gasoline is usually a clear or light amber color. If it turns dark or cloudy, it is a sign of degradation.
  3. Gummy residue: Stale gas can leave a sticky residue in the fuel tank and other components, hindering proper engine performance.
  4. Engine problems: Starting difficulties, sputtering, and stalling are common symptoms of using old gas in a snow blower.

Recommended gas storage time

To ensure optimal performance, it is recommended not to store gas in a snow blower for longer than 30 days. Gasoline can start to degrade within just a few weeks, especially if not properly stored or if it contains ethanol.

Potential issues from old gas in a snow blower

Using old gas in a snow blower can lead to several problems:

Starting difficulties

Old gas can make it challenging to start the snow blower’s engine. The engine may require multiple attempts to start or might not start at all. This can be frustrating, especially when there is snow buildup that needs to be cleared urgently.

Engine damage risks

Stale gas can cause engine damage over time. The degraded gas can leave behind residue that clogs fuel lines, carburetors, and other engine components. This can result in reduced engine performance, increased fuel consumption, and potentially costly repairs.

Decreased performance

Using old gas can significantly impact the overall performance of a snow blower. The engine may run roughly, lack power, or have reduced speed, making it less effective in clearing snow. This can result in longer clearing times and more effort required from the operator.

How Long Can Gas Sit In A Snow Blower?

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Preventing gas degradation in a snow blower

To prevent gas degradation in a snow blower, the following steps can be taken:

Using fuel stabilizers

Fuel stabilizers can be added to gas before storage to extend its shelf life. These additives help prevent the oxidation and evaporation of volatile components, keeping the gas fresh for a more extended period. It is essential to choose a fuel stabilizer that is compatible with ethanol-blended gasoline.

Emptying the gas tank

If the snow blower will not be used for an extended period, it is advisable to empty the gas tank completely. This reduces the risk of stale gas sitting in the tank and other fuel system components. Running the engine until it runs out of gas helps ensure there is no remaining fuel in the system.

Proper storage techniques

When storing a snow blower with gas, it is crucial to:

  • Store the snow blower in a cool, dry place to minimize temperature fluctuations.
  • Use an airtight gas can to prevent air exposure, which can lead to gas degradation.
  • Keep the gas can away from direct sunlight and other sources of heat.
  • Use gas cans specifically designed for fuel storage, with an appropriate seal and venting system.

Steps to clean a snow blower’s fuel system

Regular cleaning of the fuel system can help prevent issues caused by old gas. The following steps can be followed:

Inspecting fuel lines and filter

Inspect the fuel lines for any signs of damage or blockages. Replace any damaged or clogged fuel lines. Additionally, check the fuel filter and replace it if necessary to maintain proper fuel flow.

Removing old gas from the carburetor

To remove old gas from the carburetor:

  1. Drain the gas tank completely.
  2. Remove the fuel line connected to the carburetor.
  3. Allow any remaining gas to drain out.
  4. Reconnect the fuel line after ensuring it is clear of any blockages or debris.

Fuel system cleaning products

There are fuel system cleaning products available in the market that can help remove impurities and deposits from the fuel system. Follow the instructions provided with the product to clean the carburetor and other fuel system components effectively.

How Long Can Gas Sit In A Snow Blower?

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Testing and replacing spark plugs in a snow blower

Importance of spark plugs

Spark plugs play a crucial role in the ignition process of the engine. They create sparks that ignite the fuel-air mixture, enabling the engine to start and run smoothly. Regular maintenance of spark plugs ensures proper combustion and optimal engine performance.

Signs of worn-out spark plugs

The following signs may indicate that the spark plugs in a snow blower need to be replaced:

  1. Difficulties in starting the engine.
  2. Engine misfires or sputtering.
  3. Decreased fuel efficiency.
  4. Lack of power or poor engine performance.

Replacing spark plugs

To replace spark plugs:

  1. Locate the spark plug wire.
  2. Disconnect the wire from the spark plug.
  3. Use a spark plug socket to loosen and remove the old spark plug.
  4. Install the new spark plug by hand and tighten it with a socket wrench, being careful not to overtighten.
  5. Reconnect the spark plug wire.

Regular maintenance for optimal snow blower performance

Regular maintenance is essential for keeping a snow blower in top condition. These maintenance tasks should be performed regularly:

Checking oil levels

Check the oil levels regularly and change the oil as per the manufacturer’s recommendations. Clean oil ensures proper lubrication, reducing friction and wear on engine components.

Cleaning the chute and auger

Regularly clean the snow blower’s chute and auger to remove any snow, ice, or debris buildup. This prevents clogging and ensures smooth operation.

Inspecting belts and skid shoes

Inspect the belts for signs of wear or damage. Replace any worn or damaged belts to maintain proper power transmission. Additionally, regularly check and adjust the skid shoes to prevent damage to the blower and ensure proper clearing height.

How Long Can Gas Sit In A Snow Blower?

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Safety precautions when dealing with gas in a snow blower

Working with gas in a snow blower requires taking appropriate safety precautions:

Avoiding fire hazards

Never smoke or work near an open flame when handling gasoline. Gasoline is highly flammable and can cause fires or explosions if mishandled. Always store and refuel the snow blower in a well-ventilated area away from any potential ignition sources.

Proper ventilation in storage area

If storing the snow blower in an enclosed space, ensure proper ventilation to prevent the buildup of potentially dangerous fumes. Adequate airflow helps dissipate any gasoline vapors that may be present.

Safe refueling practices

When refueling the snow blower:

  1. Turn off the engine and allow it to cool down before refueling.
  2. Avoid overfilling the gas tank and wipe up any spills or drips.
  3. Use a funnel to prevent spills and ensure accurate pouring.
  4. Replace the gas cap securely after refueling.


Proper maintenance and care of a snow blower’s gas system are crucial for its optimal performance and longevity. While gas can sit in a snow blower for a short period, it is recommended not to store gas for longer than 30 days to avoid degradation. By using the correct type of gas, preventing gas degradation, and regularly maintaining the snow blower, you can ensure effective snow clearing for many winters to come.

How Long Can Gas Sit In A Snow Blower?

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