Too Much Fuel Stabilizer in Mower

Too Much Fuel Stabilizer in Mower

You may be tempted to add too much fuel stabilizer in mower. But what are the effects of too much stabilizer in your lawn mower?

Remember that you must add a fuel stabilizer to the gas when storing your lawn mower during winter or off seasons.

It will be easier to start after storage. However, only add the recommended amount of fuel stabilizer.

We have highlighted the effects of adding too much fuel stabilizer to your lawn mower. Also, we have added other related topics to adding fuel stabilizers.

Let’s get started:

Is too Much Fuel Stabilizer in mower bad?

photo 1637269820082 d4ad72e2ad75
Lawn mower

You can add too much stabilizer to your lawn mower. But there are effects of over-treating your gasoline fuel.

It will lead to fuel and engine issues such as clogging filters, carburetors and decreasing engine efficiency and performance.

The best thing for you is to avoid adding too much fuel stabilizer. Only use recommended ratio by the brand manufacturer to avoid various fuel problems.

Read: Bad gas in riding lawn mower

Adding Fuel Stabilizer in a Lawn Mower

photo 1595049822012 0a2fd6707ae0

A fuel stabilizer is essential while storing the mower for an extended time because it helps you keep the gas fresh for a long time.

However, you must mix the correct ratio of fuel stabilizer with gasoline in your lawn mower.

The stabilizer will protect the fuel from gumming and pitting up. Again, your mower will start easily from storage while you want to use it.

When adding fuel stabilizer, consider these tips:

1. Mix Depending On Stabilizer Brand

The first thing to consider before mixing stabilizer with gasoline is the brand of the stabilizer. Each brand has recommended specific ratios indicated on the stabilizer label.

Different brands will have specific ratio recommendations. Therefore, the essential thing is noting the ratios indicated on the stabilizer brand. And don’t consider the brand of your lawn mower.

Also Read: How to store lawn mower outside for winter

2. Stabilize All Fuel Types

It doesn’t matter the type of your mower’s engine. Some require a mixture of cycle oil with gasoline, while others only straight gasoline. Use a fuel stabilizer because it will protect your fuel tank against moisture.

The ratio you add to any type of fuel used will be the same. However, follow the brand’s recommendation to ensure you use the proper amount.

Perhaps you use gasoline fuel blended with ethanol; adding a fuel stabilizer will lengthen its life span. But only use fuel stabilizer recommended for gas-ethanol mixtures.

Read: How to dispose of old mower gasoline

photo 1629335493555 207a26e4f756

3. Mix With Fresh Gasoline

If you want to keep your engine starting easy after the offseason, mix recommended ratio of fuel and stabilizer.

Remember that a fuel stabilizer will only work after mixing it with fresh gasoline. Even after you add to bad gasoline, the fuel stabilizer will not refreshen it.

If you want to get the benefits of a fuel stabilizer, mix the gas and recommended ratio of fuel stabilizer to fill the mower’s tank.

When done, run your mower’s engine for 10 minutes to help circulate the fuel mixture in the system. The mixture will protect the engine’s carburetor easily.

Read: Leaf blower storage ideas

4. Filter or Pour

Only use the fuel stabilizer when you plan to store the mower for over 30 days. Perhaps you have a small mower that you infrequently use, extend the life of its fuel by adding a fuel stabilizer.

Sometimes, you may not want to measure fuel stabilizer into the gasoline. Check those manufacturers that make a cartridge having a fuel stabilizer.

Then you can snap it inside your mower’s gas cap. The cartridge will dip the fuel stabilizer slowly into your mower’s gasoline.

photo 1520256190292 d1ad4ab9d959

Why Use a Fuel Stabilizer?

The fuel stabilizer will keep your mower’s gasoline fresh and effective for use for about two years.

Chemical reactions in the stored fuel and the evaporation of volatile components make the liquid fuel not ignite properly.

Depending on how you store your lawn mower, it may take less than three months for fuel to go bad.

Old fuel leaves gummy deposits inside sensitive parts of the engine. Unless you use a fuel stabilizer that prevents it from happening, the bottom line will be trouble.

That said, consider these tips:

  • When to use a fuel stabilizer

If you want to use a fuel stabilizer, it will depend on two situations. First, when storing fuel gas in the can for some months. In such a situation, add recommended fuel stabilizer in a can, add gasoline, and seal the cap.

The other situation is when adding a fuel stabilizer directly into the mower’s fuel tank. Put less than full fuel in the fuel tank and add recommended amount of stabilizer.

When done, top off to fill the tank to the maximum level and start the engine. The engine should run for about 10 minutes to mix the stabilizer with fuel in the carburetor.

  • Fuel Stabilizer to Use

You should use a fuel stabilizer for all types of engines – either diesel or gasoline. However, it will depend on the stabilizer brand because some brands are formulated for diesel or gasoline fuel. There are also those brands for dual purposes; therefore, read the labels carefully.

  • Amount of Stabilizer to Use

You can find stabilizer instructions on the bottle indicating the amount you should add to the fuel. The thing you will find is that the quantities specified there are small.

Depending on the brand recommendation, a lawn mower may need one or two tablespoons of the fuel stabilizer. Adding the correct amount will allow your gasoline to burn cleanly after years of storage.

FAQs on Too Much Fuel Stabilizer in Mower

Can I add too much fuel stabilizer to my lawn mower?

Generally, you’re not allowed to add too much fuel stabilizer to your lawn mower. Ensure you have read and understood the instruction given by the manufacturer before you can add any stabilizer.

Is fuel stabilizer good for lawn mower engine?

Diesel and gasoline fuel are perishable commodities, and that’s the reason fuel stabilizers matter. When you don’t use a fuel stabilizer in your lawn mower means poor performance after offseason storage.

When should I add a fuel stabilizer?

If you are ready to store your lawn mower for winter or offseason, add the recommended amount of fuel stabilizer. That way, it will give you an easy time to start your lawn mower after storage.

Adding too much fuel stabilizer in mower makes your lawn mower not run after the offseason.

The moment you realize you have added more fuel stabilizer than recommended, drain the gas. Most important is to mix the right amount of stabilizer with the fuel.

Read: Bad starter on riding mower


  • Ricky

    Hi, I’m Ricky. I’ve been involved in lawn care and landscaping from when I was 15. To be honest, I didn’t like the idea of pushing mowers, collecting grass clippings, and maintaining flowerbeds at the time. But having seem the passion my parents had for gardening and outdoors and the effort they put in maintaining the health and beauty of our landscape, I couldn’t help but not only admire their hard work but also I became a part of it. As someone who loves to spend time with nature’s best, I find myself learning a lot more about gardening and outdoors on a daily basis. Not to mention I love to share the knowledge I’ve gathered over the years with my readers at We Mow Dallas. To be clear, I don’t have a Master’s degree in gardening or anything like that. Everything I’ve learned about gardening, landscaping, and lawn care spring from passion and engagement with my parents. And with a ton of free information out there, plus the ability to run tests and determine what works best for lawn care and landscaping, every day is an opportunity to learn and implement something new. My goal with We Mow Dallas is to teach you exactly how to maintain your lawn and landscape. And since I walk the talk in reality, you shouldn’t hesitate to join me in this wonderful world of landscaping and lawn care. K Beatrice

Leave a Comment

Your email address will not be published. Required fields are marked *