Lawn Mower Storage: Why Draining The Fuel Tank Is A Mistake. Lawn mower gas additive

Lawn Mower Storage: Why Draining The Fuel Tank Is A Mistake

Wondering how you can ensure your lawn mower and outdoor power equipment will be ready to roll when the grass turns green?

If you’ve checked your manufacturer’s guide, you’ve probably seen a suggestion to perform some preventive maintenance prior to storage. This is always a good habit to get into. Some manufacturers will also recommend running your equipment dry before putting it away for the winter.

While draining the fuel tank may sound like a good idea, it could harm your engine.

Running a lawn mower dry will make it harder for it to fire right up when it comes time to take it out of storage. This is true of all your outdoor equipment and tools, from mowers and blowers to trimmers and chainsaws.

Lawn equipment relies on three basic elements to work. If you don’t have all three, your engine will not run:

Clean air will always be available if you take time to clean or replace your air filter. And a clean, properly-gapped spark plug usually takes care of the spark.

But fuel? If you don’t maintain components that help properly distribute gas at the right time and in the right amount, your equipment might not perform well. In fact, it may not run at all.

Draining the tank harms your lawn mowers carburetor

Draining the tank harms the “heart” of your equipment. Think of one of the most important organs in your body: your heart. The lawn mower carburetor is, in many ways, your engine’s “heart.” It blends air and fuel and circulates these elements into an engine’s cylinders.

Each time you drain the gas tank, you inadvertently put stress on your equipment’s critical “organ.” Here’s what happens:

  • Draining fuel allows oxygen to enter the lawn mower’s carburetor.It’s impossible to get every last drop of gasoline out. When oxygen attacks the small fuel droplets left behind, it causes gum and varnish. If this debris settles in the wrong place, such as a needle valve tip, the carburetor will need cleaning to work properly.
  • Where there is air, there is water (damage).Allowing your gas tank to sit empty for long periods leaves a huge area for water vapor to condense. When moisture collects, it can trigger corrosion in the tank, fuel lines, carburetor and cylinders, and can even cause catastrophic engine failure if a big “gulp” is taken into the engine all at once. (If your mechanic says there is “white rust” in the carburetor, this is why.)
  • Fuel system plastics and rubbers are designed to live in fuel.These parts can become brittle and crack when exposed to air.

What to do instead: Avoid risks with gas stabilizer.

Manufacturers sometimes recommend draining the tank to winterize a lawn mower because the worst thing you can do is leave old fuel in an engine during long periods of storage.

You may have followed this advice in the past without noticeable issues, but that doesn’t mean you’re in the clear. If draining the tank becomes a yearly habit, there’s a good chance you’re shortening the lifespan of your lawn mower and other tools.

There’s a much easier way to properly store your lawn equipment. To avoid damage, simply use a quality fuel stabilizer and fresh fuel before putting equipment away for the season.

Here’s how to winterize a lawn mower correctly

Step 1: Buy and stabilize fresh fuel for maximum protection. Adding fuel stabilizer to old fuel will stop it from degrading further, but the fuel may already have broken down.

Step 2: Fill your tank 95% full with fresh, stabilized fuel. Leaving a little room prevents the fuel from expanding and spilling in warmer weather, and reduces the risk of water vapor that can condense and contaminate fuel.

Step 3: Run the engine for a couple of minutes. This gets the stabilized fuel into the carburetor and fuel lines.

While you should still consult with your manufacturer for product-specific equipment and engine maintenance tips, these simple steps apply to all engines, big and small. A few minutes on each piece of yard equipment can save hours when the grass starts growing and the season kicks off in spring.

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step one is incorrect. an ethanol treatment should be used all of the time. oxygenated fuel @ 10% (e10) adds 3 1/2% oxygen to the fuel and oxygen contains water which can cause “white rust” (calcium and lime) it also enleans the fuel to a mixture from 14.7 to 1 to 15.2 to 1. which can increase the engines running temperature.

We recommend treating the fuel as soon as it is dispensed from the pump This will ensure that the fuel will be kept as fresh as possible and also help keep the fuel system clean. There is no need to add any more STA-BIL Brand unless more fuel is added. In such case, simply add enough product to cover the additional fuel. If the concern is countering the negative effects of ethanol in the fuel system, we highly recommend treating with STA-BIL 360 Performance which will prevent such issues such as corrosion, rust and condensation issues. It will also stabilize fuel for at least 12 months. Please contact us at if you have any questions about this. Thank you.

On step 4 when said to run with fuel stabilizer for couple minites, then do we still leaved fuel stabilizer in tank thru winter?

Hi Larry, after adding fuel stabilizer to a full tank and letting the engine run for a few minutes, then you are done. That’s all you need to do! Please contact us at if you have any questions.

I have been doing the same thing with all my gas power equipment since 1976. [ snowblower, chain saw. gas trimmer. gas power washer, gas power generator. my John Deere lawn tractors right up to my new 2017 X – 570 JD. Just add a bottle of dry gas [ STA – BIL ] Starts right up come spring time. I run that same gas for my 1st lawn cutting then just had fresh gas to the tractor. Never had one single problem.

What if it is already January. and quite cool. (2 degress C at night), ….and I CANNOT start my mower and weed eater easily. Should I just pull the cord to distribute gas and stabiizer?

This will not get the gas into the carb. The carb bowl can be remove and let the fuel run through and then replace. Please contact us at if you have any questions about this. Thank you.

I am new at this and just learned this information. My mower has some gas left in it, and today is the first warm day we’ve had, so I went and bought some stabilizer. Can I put it directly in my tank with the gas it already has left in it and run the mower before storing it for the rest of the winter? I live far from town and don’t think I am able to go get fresh fuel. Thanks!

Yes. It goes directly into the mower’s gas tank. Although it is best to keep the lawnmower’s tank as full as possible prior to storage, treating the remainder fuel with STA-BIL and running the engine for about 2 minutes will help in keeping the system from varnishing (gunk).

I have tried all ways to store my snow blower for the summer and have still replaced the carberator several times. I now have found the answer. I use Tru Fuel available at Home Depot And Lowes. It is gasoline with NO ethanol. I still use stabil and still drain the tank and carb before storage. Been several years now with not one problem. Yea, it’s 20 bucks a gallon but how much do you use a season, maybe two gallons. Less that a carberator

You are correct. It is definitely true that non-ethanol fuel is more reliable than ethanol-blended fuel as it is not as susceptible to condensation, corrosion and rust issues and treating with STA-BIL still must be done to keep it as fresh as possible. However, if obtaining non-ethanol fuel is a challenge (cannot find it or unaffordable), we recommend trying STA-BIL 360 Performance as it tackles those problems while in use and storage.

Sounds like a good idea. I used 360 stabil and pure gas during the season. For me, the gas went bad and made the mower difficult to crank and keep running after about 6 weeks of nonuse. I’ll go back to running it empty at the end of the season.

We are disappointed to hear that our product did not live up to your expectations. There are several reasons that may affect results in storing fuel –from age and quality of the fuel, to the products shelf life (2 years after opening), to storage conditions. So far, in 60 years we have had very good feedback from consumers and STA-BIL is even recommended by many OEMs such as MTD and Generac as well as featuring a Full Satisfaction Guarantee. Having said that, dry storage is also a good option as long as it is done properly as leaving any residue in the fuel system may lead to varnishing, sediment accumulation, corrosion and rust.

Hi Wayne, all STA-BIL products have a shelf life of two years from the time of opening. Unopened it’s 8-10 years. Please contact us at if you’d like help checking the manufacturing date of your bottle.

I’ve been using the red stable for all my small engines (2/4cycle) for at least 30 years with great results. I use sta-bil year around and only buy premium with no ethanol. 2016 I bought a boat with a Yamaha four stroke motor which l use the 360 marine sta-bil. Can I use the 360 marine for all of my equipment or do l need to keep a bottle of the red stable for my lawn equipment?

Hi Dan, you can use STA-BIL 360 Marine for all of your equipment. However, it is more concentrated so be sure to pay close attention to the treatment rate. Please contact us at if you have any questions about this. Thank you.

I left gas in my mower all winter, but didn’t add stabilizer, can I add it now and still use what’s in the mower or should I drain it and start with fresh gas. I still have a gallon of gas that has sat all winter. Can I add stabilizer and still use it.

It is always best to drain and start fresh if the fuel is older than 30 days. Adding STA-BIL at this point will not refresh this fuel –it will only keep it from deteriorating even further. However, there is a good chance that this fuel would be OK to use in a vehicle combined with fresh fuel. Please contact us at if you have any questions about this. Thank you.

Hi Ellen. Yes. Even non-ethanol blend fuel needs to be stabilized as it can start to go stale in as little as 30 days. Please contact us at if you have any questions about this. Thank you.

Ok so what happens when you run the tank dry but forget about the gas in the bowl and now the carborater is gunned up with varnish? Is there a solution to that or something that you can add to the tank to run it through to clean it up or do you have to take the carborater apart to clean it up

Hello Andrea, Before doing a thorough cleaning or have it serviced, try START YOUR ENGINES! To try to get all the gunk and varnish cleaned up. Please contact us at if you have any questions.

Last season my mower stopped working. The guys at the shop recommended using Sta-Bil all year round. What type should I be using DURING the season?

How to Clean a Lawn Mower Gas Tank!!

Hi Brian, we would recommend using STA-BIL 360 Performance for in-season use: Please contact us at if you have any questions about this product. Thank you!

what is shelf life for Sta-Bil? I have a few cans with the code 05814 and need to know if it’s still usable. Thanks.

When you buy a new lawnmower etc it does not come with gas. for years i always run the tank dry for strorage whether my generator between runs or my lawnmower between mowing seasons. They always start right up. I always keep small engines empty of fuel for down time. Works great!

Hi, Sean. If the equipment uses a 2-cycle mix fuel, simply top off the gas tank and treat with STA-BIL. No need to take the oil out.

While I understand your concerns on draining your gasoline at the seasons end, I still do. I own a fleet of small machines. For example I own a power washer, 2 and 4 cycle garden tillers. A chipper shredder. 3 lawn mowers of different shapes and sizes even a pair of snowblowers. Don’t forget the chainsaw, weed wacker and a hand held. back pack and big walk behind leaf blower. I almost forgot the hedge trimmer. Oh yeah, a house generator too. Some are 2 cycle engines most are 4 cycle. Some machines are run only once a year then the oil is changed, the gas run dry and the machine is put back in the shed clean waiting for next year. Others are run almost non stop 12 months a year. I currently use STA-BIL 360 Marine in all my fuel as they go into gas cans. I store 45 gallons of 91 octane here in 5 gallon gas cans for the emergency generator. This gas is used in all my machines as well which is tagged with the date of purchase and rotated (the oldest is burned first). If not burned in the small machines by 6 months, it’s poured into my truck to get rid of it. My spare snowblower had rust in the carburetor which I had to fix regardless of using the red stabil at the time. My push mower had issues as well, which needed my attention. Today’s gasoline is garbage. I trust stabil but only to a point. I will continue running the carburetor’s dry in the lightly used machines. I don’t have any further issues with water damage in my carburetors. They all start when needed in 1 or two pulls so running them dry won’t hurt a thing. I even use STA-BIL 360 Marine in my lightly used vehicle because the fuel purchased at the pump is of such poor quality.

Is it safe and best to use fuel stabilizer for snow blowers when you store them during the summer and fall seasons? That is around 10 months of storage. Sta bil packaging shows it is good for 6 months while videos claim up to 24 months. Honda recommends draining the fuel as fuel-caused problems will void the warranty. Looking forward to your advice.

Hello, STA-BIL Storage will keep fuel fresh for up to 24 months. However, we always recommend to follow the manufacturer guidelines to avoid any warranty issues. If you have any other questions please contact consumer support at

Use Sea Foam Fuel Additive in a Lawn Mower to Stabilize Fuel

You’ve probably been stuck trying to start your mower the following mowing season only to find out it won’t start.

A big culprit to mowers not starting after sitting a while is stale gasoline. Gasoline does not have a long shelf life and needs to be used within 30 days unless you add a fuel stabilizer.

Sea Foam fuel stabilizer can be used in any gas or diesel combustible engine and fuel system. Sea Foam is a petroleum-based product without harsh chemicals making it safe to use in your engine or fuel system.

Below, we’ll cover how Sea Foam can help a mower’s motor and fuel system, as well as whether or not the solution should be used with your lawn mower and how much you should use.

This post may include affiliate links. Purchases made through these links may provide a commission for us, at no extra cost to you. As an Amazon Associate, we earn from qualifying purchases.

Follow all safety instructions provided in your equipment operator’s manual before diagnosing, repairing, or operating. Consult a professional if you don’t have the skills, or knowledge or are not in the condition to perform the repair safely.

Can You Use Sea Foam Fuel Additive in a Lawn Mower?

Sea Foam is a brand of fuel additive; Some of the improvements you can expect to see by using a Sea Foam product could be:

  • Reduced moisture in the fuel
  • Stabilizes fuel for up to two years
  • Cleans carburetor liquifying deposits and residues built up on needles, seats, and float bowls.
  • Improved performance
  • Cleans intake valves

In addition to cleaning the built-up deposits and dirt from your combustion engines, using Sea Foam as a fuel additive has been shown to has also been shown to improve performance and extend the overall lifespan of engines.

Sea Foam has been on the market for over 70 years. Sea Foam is a petroleum-based product so you do not have to worry about the solution damaging your mower’s engine; it’s designed to prolong your motor’s life.

Proper Way To Tip A Lawn Mower Over

Why Use Sea Foam in a Lawn Mower?

Sea Foam stabilizes fuel for up to two years. There are three reasons why you would want to use an additive like Sea Foam in your lawn mower.

  • Valve Seat Erosion: The valves of a combustion engine open and close to allow air into the cylinders and the exhaust to exit the cylinders. Over time this can become damaged and eroded by built-up particulates and debris. Sea Foam helps clean and remove this debris, ultimately extending the life of the valves.
  • Damaging Effects of Ethanol: In addition to debris and particulates from the air intake, the ethanol present in modern-day gasoline carries corrosive properties.

How to Use Sea Foam on Lawn Mowers

One of the problems gasoline has is that it leaves behind a gummy corrosive residue that can cause blockages and drain the performance of your engine (see above).

This residue is worsened if left sitting for long periods, during the winter season, for example. So, in these instances, a fuel system cleaner can help.

A 16-ounce can of Sea Foam can treat up to 16 gallons of fuel. Generally, to use as a fuel system cleaner and stabilizer on your lawn mower:

  • Fill a 1-gallon gas can with 1 gallon of gas.
  • Then add the appropriate amount of cleaner to the can– 2 ounces for every gallon when cleaning your fuel tank. Using more than 2 ounces is okay. The more you use, the better the solution cleans.– 1 ounce for every gallon when used as regular fuel maintenance

I recommend using Sea Foam in each tank of fuel.

Can You Use Fuel System Cleaner in a Lawn Mower?

A gas-powered lawn mower operates the same as any other gasoline-powered engine. As the engine is running, various dirt particles will enter into the mix through the air intake.

You can clean this the hard way by manually taking the engine apart to clean it, or the expensive way by taking it to a professional to do so. But the easiest way to clean out this excess debris is by using a fuel system cleaner.

Fuel system cleaners like Sea Foam remove this excess dirt and debris that accumulates in the engine over time. Keeping the engine clean keeps the fuel itself clean, which improves the performance of the engine.

lawn, mower, storage, draining, fuel

Solutions You Shouldn’t Use on Lawn Mowers

Although many fuel system cleaners can be safely used with a lawn mower, there are a few solutions that shouldn’t be used at all. Here is a product that is not recommended to be used with a lawn mower:

  • Any Additive Targeting a Diesel Engine: This includes Diesel System Cleaner and a Diesel Emissions Reducer. Avoid these solutions if you own a gas or petrol-powered lawn mower.

Other Fuel System Cleaners That Work on Lawn Mowers

While Sea is perfectly safe and effective to use for your lawn mower (and any combustion engine for that matter), there are a few alternatives that you could consider as well:

  • Archoil AR 6200: Archoil is mainly intended for diesel engines but can be used with gas engines too. It acts as a stabilizer as well as a detergent.
  • Lucas Safeguard Ethanol Fuel Conditioner: This is an older product that acts as a lubricant and a detergent to help combat the natural deposit build-up caused by ethanol.
  • STA-BIL Original: This is again an older product. It’s primarily a fuel stabilizer that can, again, extend the life of fuel for up to two years. It’s also a well-rounded product that helps prevent corrosion and remove water build-up, but with the increased adoption of ethanol fuels, its effectiveness has waned compared to a competitor like Seafoam.

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Use VP Fix-It-Fuel if your lawnmower won’t start (or any other piece of outdoor power equipment). Fix-It-Fuel is a single-use treatment for poor or non-running small engines damaged by ethanol-blended street gas. It cleans and rejuvenates the fuel system. As a result, your equipment will start more easily and operate in top condition. Fix-It-Fuel is an 89-octane gas. It’s ETHANOL-FREE and pre-mixed with oil. Although it’s a 50:1 mix, it works in any 2- and 4-cycle small engine application.

Fix-It-Fuel cleans and repairs the fuel system without having to remove the carburetor or injectors, thus avoiding costly repairs and downtime. VP Fix-It-Fuel is best used as a pre-treatment before introducing ETHANOL-FREE VP Small Engine Fuel, which is designed for ongoing use to prevent ethanol-related problems from occurring in the first place.

We design a technologically-advanced 40:1 mix, 50:1 mix, and Multi-Mix 40:1/50:1, which is great for people who own a combination of equipment that calls for both 40:1 and 50:1 fuel.

What Pump Gas Does

Do you currently use pump gas in your expensive outdoor power equipment? To be honest, many people unwittingly assume that if it works fine in their vehicle, it will work fine in their equipment. The truth is, using pump gas is the absolute worst thing you can use. Why is that? In a word, ethanol.

Regular gasoline has ethanol, which is an oxygenate. Firstly, when ethanol-blended gas sits idle in the tank, phase separation takes place. That’s when the ethanol attaches itself to water molecules. This causes gasoline to separate from the ethanol/water cocktail. Essentially, ethanol absorbs water.

Secondly, water promotes corrosion, and corrosion eats away at the vital engine and fuel system components of a 2-cycle or 4-cycle small engine. Those hard-working little engines demand better maintenance. It doesn’t take much gum or corrosion to foul up a small engine. over, you can’t store pump gas long-term because it degrades quickly and forms gums faster. That’s why people have to put fuel stabilizers in their tanks when they store their outdoor power equipment.

Advantages Of VP Fix-It-Fuel

  • Cleans carburetors and injectors
  • Fixes ethanol issues caused by pump gas
  • Rejuvenates rubber and plastic
  • Off season storage protection

Water in Gas Lawn Mower: How It Gets in and How To Fix It

Water in gas lawn mower could not only waste your precious gardening and lawn mowing time, but most of all, it can also damage your ever-reliable lawn mower.

You can prevent this from happening by knowing how water collects in a lawn mower and the ways to fix it – usually by accident. Read on and find out which scenario is applicable to your gas lawn mowers.

Why Is There Water in Your Gas Lawn Mower?

There is water in your gas lawn mower because of three main reasons: carelessness, accidents, and fuel usage. Water has a tendency to accumulate in your mower.

Despite your good intentions and caution in taking care of your machine, this doesn’t keep you safe from having to encounter this problem.

– Carelessness

Yes, letting your mower sit outside your garden for too long will expose it to moisture and condensation. This happens when the gas tank is left under hot day and cold night conditions. Moisture and condensation will eventually collect in your tank, settling at the bottom and waiting to be sucked in by your lawn mower machine.

Not checking your gas caddy tank could also lead to water getting into your lawn mower. Checking every part of your lawn mower and its nearby materials is imperative, more so when the lawn mower engine has been left out for too many days.

Also, you have to check if your gas container tank has an ill-fitting or loosely fitted cap or perhaps there are small cracks or small openings where water could enter unnoticed.

Forgetting to winterize your lawn mower will also result in some water condensation gathering at the bottom of your gas tank. Leaving your gas tank full for the whole of winter may give you more trouble than ease, especially when you want to start using your machine once again.

If this has happened to you, you should ensure you take

better care of your gas lawn mower the next time winter comes.

– Fuel Usage

Before buying your mower, first, be familiar with its fuel usage. Although there are alternatives being used today, most lawn mower owners still use gas that has large amounts of ethanol to fuel their lawn mower machines. At 10 percent to 15 percent, ethanol is a water magnet.

It draws in dew, moisture, and condensation from the surrounding air, which will eventually contaminate the gas and lead to the unsuccessful operation of the mowing machine.

– Accidents

Accidents do happen, and your gas mower is no exception. It may be one of the reasons why water goes into your gas lawn mower. Numerous people have been using forum sites like Quora to ask for advice on how to get the water out of their lawn mower tanks, in which they admittedly poured water instead of fuel.

Now, even if you’re not yet an expert, here’s how to tell if there is water in gas lawn mowers. Seasoned gardeners may easily detect if there is water in their lawn mower tanks. However, that may not be the case for newbies in gardening and lawn mowing.

  • Before turning on your lawn mower, look at it closely. Peek through its tank, and observe if there are any spots of moisture, globules, or bubbles at the bottom of the tank that could possibly be water. This is especially applicable when your tank has not been used for weeks or months already.
  • As you crank up your engine, listen for any stutters and stumbles while your machine is switched on. You may not hear it at first, but these symptoms of bad gas in a lawn mower would eventually emerge as you continue using it. If any of these disturbances are present, then by this time, water must have reached the engine part already.

If left undetected while the mower is used continuously, the water in the gas lawn mower would lead to corrosion of metals and damage the machine.

In other cases, despite the presence of water in the gas lawn mower, the mower engine can start running as if there’s no problem at all. However, if you would observe and look closely, you would notice other signs that would point out the deficiency in the mower engine. These are the symptoms that water is running in the engine.

Splutter and stutter

When you hear that the engine is coughing when you start running it, water in your lawn mower gas tank could be the problem. In some cases, the sputtering and stuttering of the engine may not happen at the onset but rather in the middle of your mowing.

These troubles would eventually hinder you from continuing the work that needs to be done, and they indicate that water (or perhaps other elements) is present in the engine.


Another one of the water in mower gas tank symptoms you could observe is the belching bout of unusual smoke. Smoke coming out of your mower is somewhat thicker compared to that of a lawn mower gas tank where water is not present.

This happens because the fuel does not combust well in the piston of the engine because of the presence of another element, which is water.

Engine won’t start

In severe situations, if the lawn mower won’t start, water in the gas tank might have flooded the engine already. It would be difficult to mend the situation because the spark plug and air filter might have been damaged, too.

Aside from damage done on your gardening and mowing deadlines, water in the mower can also bring damage to several parts of the gas lawn mower. Once your gas fuel tank has water in it, no matter how little, the water starts getting into the engine. Expect that your gas lawn mower will be damaged in no time.

Whatever the reasons why water has gotten into your lawn mower tank, you just need to remedy it to avoid further trouble in the engine and for you as well. So, you don’t have to worry too much, try the following to solve your gas lawn mower predicaments. These three easy steps tell you.

How Do You Get Water Out of a Lawn Mower Gas Tank?

To get the water out of a lawn mower gas tank you have to do a few things: First you have to drain the tank completely, second, you have to check out the carburetor, thirdly, you can try putting in additives.

– Drain the Tank

Removing all the contaminated fuel in your gas tank is the best way to drain the tank. Pour the gas or fuel out on a designated container, and keep it for other non-engine purposes. After draining, clean the gas tank, and dry it.

Draining your gas tank is applicable when there is a lot of contamination. Be careful to include the fuel that has been stored in basin right next to the main tank.

– Check Out the Carburetor

As you are now convinced that water did get into the inner parts of the engine, it is best to check your mower’s carburetor next. First, detach the spark plug. Then, track the water trail along the carburetor and other fuel lines. Dry it with a piece of cloth by wiping all over the surface. There are cleaners for carburetors you could find commercially to make this task easier.

After cleaning and drying are done, add engine oil as a protective coating. Then, you can fill your gas tank up with fresh fuel and then proceed with your tasks for the day.

– Try Additives

When the water present is only a tiny amount, other people no longer drain the tanks or do other tedious tasks. Rather, they add an additive to remove water from gas tanks contaminated with water.

Commonly used and commercially available additives go by the name of ISO-Heet, BG Ethanol. There are also lawn mower owners who confirm that the isopropyl alcohol available at home can be used as an additive. In the past, the most popular additive was dry gas. Dry gas for lawn mowers works like any other additive, with a small amount added to the fuel.

Additive products are added to your gas fuel, such that the moisture is absorbed and suspended until the fuel (with a little water) could be combusted by the engine already. Additives help a great deal for a small engine machine that must have undergone freezing and or has water or moisture in it, which is a problem mostly encountered by people.

Frequently Asked Questions

– How Do You Avoid Getting Water Into the Gas Lawn Mower?

You can avoid getting water into the gas lawn mower by being careful. Accidentally pouring water into it can be avoided. Also, provide proper care when storing your gas lawn mower for a long time. If using the mower for the first time, check that no water has accumulated.

– Is the Water in the Gas Fuel Tank Harmful to the Lawn Mower Engine?

Yes, the water in the gas fuel tank is harmful to the lawn mower engine. The water can corrode the tank and damage all other parts of the engine where it has passed through. This can cause the metal parts of your mower’s engine to rust and eventually degrade over time.

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– What Is the Milky Liquid In the Lawn Mower?

The milky gas in lawn mowers indicates that the fuel and gas is contaminated with water. This happens when water reacts with petroleum products, such as gasoline. The ensuing chemical reaction between these two elements will result in an emulsified liquid.


One of the common problems encountered by gas lawn mower owners is the presence of water in their gas tank. Unknowingly, the water gets into the engine and causes heavy damage to the lawn mower. One must take note of the following to have a smooth operation of the gas lawn mower:

  • Water gets into your gas lawn mower either by accident, carelessness, or choice of fuel used. Whichever is the case, you must act immediately to save your engine and your time.
  • If there is a large amount of water in the engine, it is best to drain it and supply fresh fuel.
  • Additives could be added when there is only a small amount of water that got into your engine.
  • Proper care is necessary to avoid troubles and damage to the gas lawn mower.

Yes, water inside a gas tank can be a problem, but given the right information here, solving this dilemma would not be impossible for you.