A closeup of someone pouring fuel stabilizer into a lawn mower.

How To Use Fuel Stabilizer In Lawn Mower?

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A fuel stabilizer is an essential part of maintaining your lawn mower. By using it, you can be sure that your lawn mower will start quickly and run smoothly all season. So, how do you use a fuel stabilizer in a lawn mower anyway?

How much fuel stabilizer you use depends on the brand. Most of them have a 2:1 ratio (2 ounces of stabilizer to one gallon of gasoline) but will explain in detail on the bottle. Each is different and we recommend mixing it in a gas can rather than putting it in the gas tank of the lawn mower. This process will keep the leftover gas from going bad.

What Is Fuel Stabilizer For A Lawn Mower?

What is a fuel stabilizer? A fuel stabilizer is a chemical additive that prevents fuel from breaking down. It absorbs water and keeps it suspended, so it can’t react with the fuel. This keeps the fuel from gumming up and clogging the carburetor. This issue is one of the problems that cause hard starts, blocked fuel lines, and other issues that affect the fuel system. 

Do I Need to Add A Fuel Stabilizer?

If you have a lawn mower, you’ve likely seen a fuel stabilizer at your local hardware or home improvement store. You may have wondered if you need to use this product. It is at the owner’s discretion to use a fuel stabilizer, but if you want your lawn mower to run efficiently and with fewer problems, it is wise to get a bottle and start using it as soon as possible.

Fuel stabilizer prevents the formation of gum and varnish deposits on engine parts, which can lead to engine corrosion and performance issues. A fuel stabilizer is essential if you live in an area with high temperatures and humidity, as these conditions accelerate the rate at which fuel breaks down.

Also, if you don’t use your lawn mower often or plan to store it for an extended period, adding a fuel stabilizer will help keep the fuel fresh and prevent engine corrosion. For these reasons, we recommend using a fuel stabilizer whenever you fill your lawn mower’s gas tank.

How Often Should I Add Fuel Stabilizer To My Lawn Mower?

A closeup of someone adding some fuel stabilizer to their lawn mower.
Seems pretty easy.

You should add a fuel stabilizer to your lawn mower’s gas tank every time you fill up. This will ensure that the stabilizer is thoroughly mixed with the gasoline and that your engine is protected from gum and varnish deposits.

If you use your lawn mower occasionally, it’s still a good idea to add a fuel stabilizer to the gas tank before each use. This will help keep the fuel fresh and prevent engine corrosion.

No matter how often you use your lawn mower, a fuel stabilizer is integral to keeping it running smoothly. Add it to the gas tank every time you fill up, and your lawn mower will thank you for it!

What to Do With The Fuel Stabilizer

To use a fuel stabilizer, add it to your lawn mower’s gas tank before filling it up with gasoline. The amount of stabilizer needed will depend on your lawn mower’s gas tank size. For most lawn mowers, you’ll need to add 1 ounce of stabilizer per gallon of gasoline. Once you’ve added the fuel stabilizer to your gas tank, fill the tank with gasoline and then run the engine for a few minutes to allow the stabilizer to mix with the fuel. 

You will notice the difference in sound and horsepower, and keep all the components within the engine and fuel system in tip-top shape. There is nothing much to it. All you have to do is get the right mixture and it’s good to go.

Be sure to read the manufacturer’s instructions to determine the proper ratio for your particular lawn mower. The instructions will also be on the bottle of fuel stabilizer.

What Happens If I Don’t Use A Fuel Stabilizer?

A fuel stabilizer keeps the gas from breaking down and keeps it fresh so your engine will run better. Gasoline can start to break down in as little as 30 days, so it’s essential to use a fuel stabilizer if you’re not using your lawn mower for a while. If you don’t use a fuel stabilizer in your lawn mower, the gas will go bad, and your engine will suffer.

A lawn mower with a clean fuel system will start after the first crank. If you are not using a fuel stabilizer, you may find yourself cranking the lawn mower for a couple of seconds before it starts. It will also sputter as the bad fuel passes through the internal chambers of the engine. Over time, the fuel will cake up and cause a blockage leaving it almost impossible for the lawn mower to start. 

What Is The Right Fuel Stabilizer To Use?

It is the owner’s choice which fuel stabilizer they use. There are many factors: 

  • The container’s size: You can have a five-gallon gas can or one gallon. It makes no difference. The only thing is some brand names require a higher ratio of the fuel stabilizer than others. It is best to read each label before purchasing.
  • Price:  Price is a factor in everything because if you do not have the money, you will not have the product. Some people choose cheap brands, which is fine, but they may not get a good quality fuel stabilizer. 
  • How well the product works: Here is where the trial and error comes in. Some products remove water, some work with or without ethanol, others only are made to keep the fuel clean. Finding the right product that works for your situation is critical.

Once you find that right stabilizer, you will notice a difference immediately. 

Conclusion: How To Use Fuel Stabilizer In A Lawn Mower?

We hope that these choices listed give you a more straightforward path to which stabilizer you wish to use for your lawn mower. Research some of your options to see if there are other brand names you want to try. Store brands are also available. Good luck!

We’re curious about what you think about how to use fuel stabilizer in a lawn mower. What do you think will be the hardest or the easiest part? Let us know what you think and why in the comments below!

Todd L Miles
Lawn Mowers Enthusiast
I started "Landscape and Lawns Care" to provide clients with lawn care with better service, better products and, most importantly, better ethics. My promise to every customer is to give the greenest grass possible while controlling weeds, insects, and diseases! The most important thing is that I strive to always do the right thing for you, your lawn and your wallet!