How Much Oil To Put In A Lawn Mower? | Oil Capacity Of Lawn Mowers

how much oil to put in lawn mower

It’s crucial to comprehend the sort and volume of oil needed before you may change the lawn mower oil in your motor. What kind of oil to use, how much you need, and how much it costs depend on the kind of equipment you use, the engine within, and the weather outside. To get the maximum performance out of your lawn mower and prolong the life of the little engine, it is crucial to replace the oil. Follow our thoroughly researched advice on when and how to change the oil in your lawnmower.

How Much Oil To Put In Lawn Mower?

How Much Oil To Put In Lawn Mower?

The proper amount of oil must be applied before starting the engine of the lawn mower as part of maintenance. As a result, you must change the oil whenever it has to be changed. Whether you are adding or replacing the oil entirely, putting too much or too little oil on your lawn mower can be harmful to the engine.

Basically, to find out what kind of oil ( Premium or Regular) your machine may use, consult your user’s handbook. The size and kind of the engine determine how much oil the mower needs. For the majority of walk-behind mowers, you might need to fill it up to about 6 liters before changing the oil. The oil capacity of the majority of Honda lawnmowers is typically 55 liters.

On walk-behind lawnmowers, the compact four-stroke engines are internally lubricated with motor oil. Similar to car engines, lawnmower engines require routine oil changes to maintain top performance and guarantee extended engine life.

Small lawnmower engines require more frequent oil changes since few of them have oil filters to remove impurities. Small engines often just need to have their crankcases filled with less than a quart of oil.

When To Change Lawnmower Oil?

Don’t merely rely on the quantity of the oil that some firms advise; instead, rely more on your measurement device, in this example, a simple “dipstick.” This is a real-time measurement device that allows you to ascertain the precise amount of oil that is present in your oil reservoir.

To prevent debris from entering the oil reservoir, first, clean the area around the dipstick cover. Turn the dipstick cover counterclockwise to release it, remove it, and clean it off with a fresh cloth. Look for the level markers, which may be holes, lines, words (High or Low), or letters (H or L) at the dipstick’s end.

These represent the low, medium, and high oil measurement levels. When measuring, insert the dipstick into the reservoir for a brief period without removing the cover. Read the measurement on the dipstick by removing it and holding it upright. An optimal oil level is located between the High and Low markers.

But if you want to use your machine for several hours, you should pour in a bit more or past the halfway point between the High and Low levels. When the oil level is appropriate, securely screw the top onto the dipstick. Replace the oil in the machine after 50 hours of operation, and repeat the procedure of using the dipstick to measure the proper amount of oil.

How To Add Oil To Your Lawn Mower In The Right Way

1. Locate the Dipstick

It is advisable to check the oil level in the engine of the lawn mower before starting it up each time when the engine is still cold. If you examine it after usage, be sure to wait until the engine is cold to prevent touching it by accident and getting burned. Then locate the dipstick to obtain a precise measurement of the oil level. Make sure your machine is on level ground; if it isn’t, you’ll obtain a bogus reading.

2. Remove & Clean the Dipstick

Remove the dipstick, give it a quick clean with a clean rag, replace it in the fill aperture, and then check the reading. Do this once again to double-check the reading, just to be on the safe side. Inspecting the dipstick allows you to determine the oil’s cleanliness and level in addition to its level.

3. Check The Oil Level

There are three possible outcomes from your examination, each of which requires a different line of action:

  • You can mow the grass if the oil level and appearance are both satisfactory and the oil has a clean, dark amber hue.
  • Add oil before mowing if the oil seems clean but the gauge is low. It’s time to change the oil if it seems untidy in your lawn mower. Since heated oil will drain out of the lawn mower much more quickly, it is OK to mow the lawn first before doing this repair.
  • If the motor oil is low, add a little oil to the crankcase before cutting the grass, and then replace the oil afterward.

4. Add Oil To The Engine

Put the nozzle of a funnel into the fill aperture and pour a little amount of SAE 30 motor oil or whatever oil the manufacturer recommends into the lawnmower’s crankcase to top off the oil level. Be careful not to overfill the crankcase as this can potentially lead to issues.

Pour a small amount of oil into the engine of your lawn mower at a time, then check the level again. Rushing through this maintenance activity increases your chance of making a mistake. Use only oil designed for your lawn mower.

5. Run The Engine

Use the dipstick to check that the oil is at the correct level after adding the new oil. Once more, don’t overfill. Check after each addition, then make another after the third.

Reattach the dipstick cap once you’ve finished. Reinstall the fill plug in the crankcase using screws. The time has come for you to mow your grass. Every time you use your mower, check the engine. Lawnmower engines can start to leak a little bit and “burn oil” as they run, especially as they get older.

What Happens When You Overfill Engine Oil?

The lawn mower will overheat and create more heat than it requires if there is too much oil in the engine. It will be difficult to start a lawn mower if it has too much oil in it. The muffler will also release white smoke from lawn mower. The oil sump will overflow when too much oil gets into the lawn mower’s crankcase.

The operation of the crankcase will be hampered by an overfilled oil sump. A lawn mower that leaks oil poses a fire risk for the mower. The gasoline leak from the lawnmower, which you store in the garage, may start a fire that would destroy your entire home. The soil may also be harmed by the spill. More significantly, oil leaks can eventually cause the lawn mower to deteriorate.


The majority of small engine manufacturers advise changing the oil at the beginning of the mowing season or after 20 to 50 hours of use. Manufacturers have different suggested intervals. Drain the oil when the engine has warmed up and the spark plug lead has been taken out. Remove the oil filler cap, turn the engine on its side, and pour the old oil out of the filler hole into a pan.

Alternatively, remove the oil drain plug from below the engine. To get the finest results from the apparatus, use it with caution and attention. Use an app to keep track of how often you change your oil if necessary.

Frequently Asked Questions

Unscrew the oil tube and drain as much oil as you can from the crankcase if you detect any symptoms of too much oil in your lawnmower. To prevent any oil from entering the combustion chamber and the carburetor, tip the lawnmower to its side while emptying the extra oil, with the carburetor pointing upward. Oil should be released into an appropriate container.

Clean up any oil that has leaked onto the lawn mower’s components. The motor will undoubtedly start slowly if oil enters the combustion chamber and carburetor. Once the extra oil has been drained, replace the oil filter. Eliminate extra oil properly to safeguard the environment.

The normal oil volume is 15 oz. or 18 oz. Engine oil should be changed every 50 hours or once a year.

The normal oil volume is 48 or 64 ounces. Change the engine oil every 100 hours.  

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