Can I Use Car Oil In Lawn Mower? (EXPERT Advice)

If you’re in a pinch and need to change the oil in your lawn mower, you might be wondering if you can use car oil instead of specialty mower oil. Our post on Can I Use Car Oil in Lawn Mower? Expert Advice explores the pros and cons of using car oil and provides guidance on the best type of oil to use in your mower.

Using the right oil is important for lawn mower performance and lifespan
Specialized lawn mower oil is recommended and designed to work under the extreme conditions of mowing
Old gas or car oil should not be used in a lawn mower, as they can cause damage to the engine
Lawn mower oil should be changed after about 50 hours of use or at least once a year
Not changing lawn mower oil can lead to decreased performance, increased fuel consumption, and engine failure

If you’re curious about the potential risks of using lawn fertilizer on your pets, check out our post on Does Lawn Fertilizer Cause Seizures in Dogs? Vet Answer for expert advice.

So let’s get started

Can I Use Car Oil In Lawn Mower?

No! You shouldn’t use car engine oil in your lawnmower. As much as you might want to save money by doing so, it’s not a good idea to mix the two because they don’t have similar properties. If you put car engine oil into your lawnmower, then it will never reach its full potential and could even damage both parts of your equipment over time.

Car Engine Oil And Lawn Mowers Are Different When It Comes To The Following:

Thickness: Car engine oils are usually thicker than lawn mower oils because they need more lubrication during high-speed driving conditions compared with slower speeds on a lawn mower blade or chute assembly. 

This means that mixing them together could cause issues like clogged filters and other problems with normal operation down the road if left unchecked without proper maintenance–not something anyone wants happening after spending hundreds (or thousands) dollars on their ride!

When changing the oil in your lawn mower, it’s important to use the right type of oil. Check out our expert answer on Can You Change Oil in a Lawn Mower? to learn more about the recommended oil for your mower and how to change it safely.

How To Change The Oil In A Lawnmower

Changing the oil on your lawnmower is one of the easiest things you can do as a homeowner, and it will help keep your machine running smoothly for years to come. Here’s how:

Check the oil level. Before you start changing the oil, make sure you know where it’s at. If there’s too little in there, add some more; if there’s too much in there (and this happens when people try to put regular car gasoline in their machines), drain out some of what’s already in there before doing anything else!

Change the oil filter. It isn’t necessary for every single time just about once or twice a year should suffice but if you want to change it every time that you change out all three parts of a full cycle 

Then go ahead and take care of this step now so that everything runs smoothly tomorrow morning when we’re all done here tonight  especially since those filters get pretty dirty over time due to their proximity within such close proximity with all that hot engine stuff going on back underneath where nobody usually sees unless someone breaks down near your house.

Which happens sometimes but not often enough as far as I’m concerned because otherwise why would anyone bother changing anything? Anyway…

Car Engine Oil In a Lawnmower? ‘Explained’ – Best Engine Oil & Lawn

How Often Should You Change The Oil In A Lawnmower?

Changing the oil in your lawnmower is easy and quick. You can also save money by changing it yourself, or at least having a friend help you out. Here’s how:

Get an oil filter wrench and remove the old one (it will probably be around $10). Make sure to clean up any old oil before installing the new one.

Look for an area underneath your lawnmower that isn’t too hard to reach with an oil pan underneath it, then get some rags ready so they’re close by when you change over to the new filter. The best way to do this is usually by taking off a panel on top of where you’d like access; if not, try opening up panels as necessary until all areas are clear enough for maintenance work!

Decide whether or not changing over right away would be better than waiting until later–this depends on what kind of access points there were when removing panels initially! If there aren’t many places where this could happen then don’t worry about it unless otherwise stated by manual instructions given beforehand ; otherwise just follow along with whatever steps may apply towards getting ready before doing so without fail .

If your lawn mower is overheating, it can be a sign of a serious problem. Our experience with Can Lawn Mowers Overheat? can help you identify the causes of overheating and provide tips to prevent it from happening.

What Kind Of Oil Should You Use For Your Lawn Mower?

The best type of oil for your lawn mower depends on the type of engine that your mower has. You will want to choose an oil that is specifically designed for use in small engines and not just run-of-the-mill car engine oil. Here are some things to consider when choosing an appropriate oil:

The weight and viscosity of the oil. The weight or thickness of an oil is how much resistance it puts up against flowing through a pipe at a given temperature. Viscosity refers to how fast a liquid flows when moving under pressure, but this can also be measured by its thickness as well as color and transparency (thinner liquids flow faster). If you have a small engine such as a gas powered lawnmower, then you should use an SAE 10W30 or SAE 15W40 weight motor oil with either synthetic or non-synthetic base stocks depending on which one gives you better performance over time (synthetics tend to last longer than non-synthetics).

What Is The Best Way To Change The Oil On My Lawn Mower?

The first step is to remove the spark plug, which will prevent your mower from starting while you’re working on it. If you have a manual mower, it’s probably easiest to just set it on its side so that gravity helps get the oil out of there. 

An electric start mower might be a little more complicated; use a socket wrench and turn counterclockwise to loosen the drain plug on your engine block. 

Once that’s off, use another socket wrench in an alternate position (you can find this by looking at the shape of your oil filter) and turn clockwise until all of the old oil has drained into your pan or funnel, whatever works for you best.

Next up: remove any residual old oil from around your engine block with some paper towels or rags, followed by wiping off anything else that looks dirty (this includes any dirt/debris sticking around inside). 

Then replace both parts drain plug first followed by new filter and finally add new fresh-from-the-pump oil before reinstalling spark plug back into place!

Finally: check over everything again one last time before starting up lawnmower back up again after being turned off throughout entire process (and no cheating here!).

Old gas can cause your lawn mower to fail to start, leaving you frustrated and without a properly maintained lawn. Our guide on Can Old Gas Cause a Lawn Mower Not to Start? can walk you through the signs of old gas and provide solutions to fix the issue.

How To Check And Replace Your Lawn Mower Oil

Before you can check the oil level, you’ll need to find out where your lawnmower’s dipstick is located. The dipstick will be located somewhere below the engine, but not so far down that it’s in danger of being submerged in motor oil if the mower tips over.

Once you’ve found it and removed it (usually by pulling on a little plastic tab), wipe off any dirt or debris from its surface with an old rag or paper towel. Then place the tip of it into an open container of motor oil until about three inches (7 cm) are submerged in it. 

If there isn’t enough room for that much fluid on top of your dipstick, add as much as possible without having any spill over onto either side of your tool or anywhere else inside or outside your mower housing.

How Do You Check Your Lawn Mower’s Oil Level?

The procedure is pretty simple: Just pull out the dipstick, wipe it clean with a rag, and then stick it back in. Then remove it again and check the level on the dipstick. If your lawn mower requires synthetic oil (most newer models do), check the viscosity rating as well to make sure you’ve got the right type on hand.

If The Oil Is Too Low Or Too High:

If your lawn mower’s oil level is too low or too high, take care of that problem first before changing its oil filter or putting in new oil. Bleeding air from an engine can be tricky work weave through our guide for everything you need to know about bleeding any kind of car part here but in general: 

Make sure there are no leaks anywhere near where you want to do this; jack up one end of your vehicle so that when you open up one valve at a time (this will help eliminate air pockets), gravity will cause fresh fluid into all areas; use caution when working around moving parts like belts while they’re under pressure since they’ll likely be hot enough to cause burns if touched directly on skin!

How Do You Replace A Lawn Mower’s Oil Filter?

  • Remove the old filter:
  • Using a wrench, unscrew and remove the old oil filter from its housing on top of your mower’s engine.
  • Clean off any old oil or dirt that may be stuck to the outside of your new filter with rags or paper towels.
  • Install the new filter:
  • Using a socket wrench that matches up with your new oil filter (if it has one) tighten it onto its mountings until there is no more play in it when twisted by hand.

Check for leaks: Fill up your gas can with fresh gas and start up your mower if you find oil leaking out from anywhere after checking under each wheel and near where you removed your old filter, shut off everything immediately! 

If there are no visible signs of leakage then pat yourself on the back because you have successfully changed out both filters without any problems!

Problems with your lawn mower battery can cause it to not start or stop working while mowing. Check out our guide on Can Lawn Mower Batteries Be Recharged? to learn how to identify a failing battery and ways to recharge it safely.

What Kind Of Engine Oil Does A Lawnmower Use?

The type of oil used in a lawnmower depends on the engine. Some engines use a synthetic oil, others use a standard oil. The type of oil used in the engine should be specified in the owner’s manual. If you don’t have the manual, check with your local dealer or service center to determine what kind of lubricant is appropriate for your mower.

Does All Gasoline Contain Ethanol, Or Just Premium Gasoline?

Ethanol is a type of alcohol that is made from corn, sugar cane and other plants. It is an alternative to petroleum-based fuels used in cars and lawnmowers. 

All gasoline contains ethanol, but you may only be able to buy it in higher octane blends. If your car has a carburetor or needs to be tuned often, you should avoid using regular fuel with ethanol because it can damage the engine.

Why Do Some Brands Of Gasoline Contain Ethanol While Others Don’t?

Ethanol is cheaper than gasoline. It costs less to produce and transport, which means that it can be sold at a lower price than gasoline, even if you’re using premium grade ethanol. Ethanol has also been shown to improve overall fuel economy in vehicles that are compatible with it.

Ethanol is an alternative fuel. Ethanol doesn’t just make your car more economical—it also reduces your carbon footprint by lowering greenhouse gas emissions compared to fossil fuels like oil or coal. This makes it environmentally friendly too!

What Is Ethanol And Where Does It Come From?

Ethanol is a chemical that can be made from corn, sugar cane and other plants. Ethanol is used as a fuel in cars, trucks and other vehicles, as well as in small engines like lawn mowers and chain saws.

Ethanol contains less energy than regular gasoline (it has about two-thirds of the energy), so it doesn’t perform quite as well in your car’s engine but since it’s also less expensive than regular gasoline, many people use it when they’re filling up their tanks because their budgets won’t allow for premium fuel prices.

What Happens When Ethanol Is Mixed With Gasoline?

Ethanol is an alternative to MTBE, which was banned in many states after studies showed that it contaminated ground water and has negative effects on humans’ health.

Ethanol has also been used as a fuel source for decades, but its use has increased significantly over time as an additive to gasoline.

Using garden soil for your lawn may seem like an easy solution, but it can cause major problems in the long run. Our landscaping advice on Can I Use Garden Soil for Lawn? explains why it’s not the best choice and provides alternatives to ensure your lawn stays healthy and well-maintained.


Hopefully, we’ve answered all of your burning questions about ethanol and how it works in gas. We know that this is a controversial topic, so we encourage you to do more research before deciding for yourself whether ethanol is right for you or not! 

But if nothing else, we hope this article has made clear how much of an impact these small changes can make when it comes to environmental impacts like pollution levels and greenhouse gas emissions from vehicles on our roads today.

Further Reading

Here are some additional articles you may find useful for lawn mower maintenance and oil-related topics:

Family Handyman’s Guide to Understanding Lawn Mower Oil Types: The right oil can improve your lawn mower’s performance and prolong its lifespan. This guide explains the types of oil and why some are better than others for your mower.

The Daily Gardener’s Can You Use Motor Oil in a Lawn Mower?: Using motor oil in lawn mowers is a popular alternative to specialized lawn mower oil. This article explains the pros and cons of using motor oil and what to consider before making the switch.

My Backyard Life’s Can You Use Car Oil in Lawn Mower?: Similar to using motor oil, using car oil in a lawn mower is a debated topic that requires some research. This article discusses the safety concerns and potential issues of using car oil in your lawn mower.


Here are some frequently asked questions about using oil in lawn mowers:

Is it okay to use car oil in a lawn mower?

Using car oil in a lawn mower is not recommended. Car oil is not designed to work under the extreme conditions of mowing and can cause damage to the engine. Instead, use specialized lawn mower oil to ensure optimal performance.

Can you use motor oil in a lawn mower?

Using motor oil instead of lawn mower oil may seem like a cheaper alternative, but it can cause problems in the long run. Motor oil lacks the necessary additives and detergents to keep lawn mowers running smoothly. Always use lawn mower oil for best results.

How often should you change the oil in a lawn mower?

Lawn mower oil should be changed after about 50 hours of use or at least once a year. Frequent mowing or adverse conditions may require more frequent oil changes. Consult your owner’s manual for recommended maintenance intervals.

What happens if you don’t change your lawn mower oil?

Not changing your lawn mower oil can lead to a host of problems, including decreased performance, increased fuel consumption, and eventually engine failure. Old oil can also become sludgy and clog the engine, leading to costly repairs.

Can you mix different brands of lawn mower oil?

While it’s generally not recommended to mix different oil brands, as it can affect their performance and viscosity, it’s not a problem for lawn mower oil. Mixing different brands of lawn mower oil is okay as long as they have the same weight and viscosity. Always consult your owner’s manual for recommended oil types.