Best Grade Oil for Lawn Mower

Best Grade Oil for Lawn Mower Reviews [2020 Update]

Looking to buy the best grade oil for lawn mower?


If you want to keep your lawn in shape this season you need two things right off the bat. It’s the sharp blades and best engine oils for the lawnmower.

Since you have landed on this page, it’s likely you aren’t concerned about the lawnmower blades right now. In other words, we can assume you are searching for lawnmowers oil so that the engine can run smoothly for a long time to come.

To give you the best bang for your money here we’re going to share a comprehensive buying guide on the best oil for a lawnmower. You’ll also find relevant information at the end that you might be interested in.

So, without further ado, let’s begin.

Grade Oil for Lawn Mower: Comparison Table

NameOil TypeOil QuantityRating
Briggs & Stratton 30W 4 Stroke Engine Oil1.4 L9.8
Briggs and Stratton 100074 5W-30Synthetic Oil2×946 ML (1 Quart)9.8
John Deere Turf-Gard SAE 10W-304 Stroke Engine Oil2×946 ML (1 Quart)9.7
Honda 08207-10W304 Stroke Engine Oil2×946 ML (1 Quart)9.7
Pennzoil 550034991-6PK SAE 30 Motor Oil946 ML (1 Quart)9.6
Kohler 25 357 05 PK2 Command 10W-30 4 Stroke Engine Oil946 ML (1 Quart)9.5
Toro 38916 SAE 304 Stroke Engine Oil535 ML9.2
Quaker State (550035190-6PK) SAE 30Heavy Duty Motor Oil946 ML (1 Quart)9.4
Husqvarna SAE 304 Stroke Engine Oil946 ML (1 Quart)9.5
Lawn-Boy 89930 32:1 Ashless2 Stroke Engine Oil236 ML9

Best Grade Oil for Lawn Mower Reviews

1. Briggs & Stratton 30W Engine Oil

When it comes to the best oil for engine-powered tools you can’t go wrong with the brand, Briggs & Stratton. The quality of their products is outstanding and thus regarded as the best lawn mower oil manufacturer by a huge number of users.

And, one of their best-rated oil is none other than Briggs & Stratton SAE 30W due to the effectiveness it holds to run smaller engines like lawnmowers.


This premium Briggs & Stratton SAE 30W is known to keep the engine cool for an extended time despite continuous use. With this, you can also limit engine maintenance costs and increase oil changes interval significantly.

Oil Rating

With a higher rating specified as SJ/CF, this superior detergent oil ensures optimum engine performance and cleans everything nicely with minimum friction.

Engine Specifications

The small engine oil is tested and meets all standards required to run all 4 cycle air-cooled engines.

Oil Type & Temperature Range

It comes with a viscosity grade of SAE 30W, particularly formulated to match the warming condition. This keeps the engine operating at varying temperature ranges mostly between 40F to 100F.

  • Cost-effective
  • Reach small engine parts
  • Enough oil (48oz) to use multiple times
  • Reduce lawn mower engine frictions to nil
  • Don’t work well at freezing temperatures

2.Briggs and Stratton 100074 5W-30

We have mentioned earlier that Briggs and Stratton is the best lawn mower oil manufacturer. Their products meet all the demands that 4 stroke air cooled engines require.

And, the Briggs & Stratton 100074 5W-30 is no different. This top-notch synthetic oil works best to extract powerful mowing from your riding lawn mower.

Oil Efficiency

Due to the ‘inherent strength’ of at the molecular level, the Briggs & Stratton 100074 5W-30 oil provides excellent thermal stability at the highest level for the longest possible time. The oil is relatively thinner, reaches all engine parts, and thus promotes trouble-free engine operation. It produces better lubrication and limits overheating close to zero.

Oil Rating & Type

This genuine synthetic OEM oil comes in a viscosity rate of SAE 5W-30, making it good enough to keep the engine operation in all kinds of weather and temperature range.  This also ensures that the engine uses less oil when it starts.

Engine Specifications

Although recommended for lawn tractor and Craftsman riding lawn mower, the engine oil provides excellent protection for all 4 stroke air fueled engines. It works fine with 2 cycle motor as well.

Sludge Protection

Synthetic oil prevents varnish and sludge from forming. This, in turn, reduces engine maintenance costs and extends its service life substantially.

  • Improves fuel efficiency
  • Allow all weather protection
  • Maintain viscosity at varying temperature
  • Offer better lubrication at deep engine parts
  • Might produce coking in dusty condition

3. John Deere Turf-Gard SAE 10W-30 Oil

Talking about the best lawn mower engine oil one name you can’t go past is John Deere. And their Turf-Gard SAE 10W-30 is a huge name in the oil industry for small engines.

Oil Grade

It is a multi-viscosity engine oil rated for SAE 10W-30 in viscosity allowing it to create quick oil transmission at varying temperature ranges (0-100F).

Oil Efficiency

The oil lubricates the engine parts consistently and maximizing its performance with negligible friction and head up. Moreover, it works great at cold starts and safety tested to combat breakdown at high temperatures.

Engine Compatibility

The John Deere Turf-Gard SAE 10W-30 is for use with utility and lawn equipment that have smaller 4 cycle gasoline engines.

Wear & Sludge Protection

This particular oil keeps the engine run fluently and prevents deposits from forming. Thus it offers less wear and improves engine longevity.

  • Top-quality oil at a fair price
  • Improves fuel efficiency in small engines
  • Limit friction and enhance the engine’s health
  • Provide highest engine protection at different temperature
  • Don’t work well at sub-zero temperatures
  • The filter might create noises

4. Honda 08207-10W30

If you want to refill your Honda-powered lawn mower with the best engine oil than this  SAE 10W30 grade with the same brand is your best bet.

Viscosity Grade

The oil is categorized as an SAE 10W-30 type and is not synthetic. That said, it is a decent rating, and once refilled it will keep your engine operational in all temperatures (0-100F).

Engine Compatibility

This is not a vehicle oil and is explicitly designed to suit Honda 4 cycle lawn mower and pressure washer.

Sludge Protection

This oil is blended with polymer additives and base stocks, which stops thermal breakdown and fights deposit formation in Honda engines.

Engine Performance

The viscosity response of the oil remains consistent at different temperatures. Also, it reduces overheating significantly due to effective lubrication. In other words, with this Honda 08207-10W30, you can extract the best engine performance from Honda products in the long run.

  • Meets API (American Petroleum Institute) standards
  • Reduce frequent oil changes
  • Improves overall engine performance
  • Keep the engine cleans and friction-free
  • Enhance engine health and durability
  • The engine requires more oils to start at freezing conditions
  • Not the best option for warming conditions

5. Pennzoil 550034991-6PK SAE 30

If you are searching for one of the finest oil for your riding lawn mower to use regularly, this Pennzoil SAE 30 could be an ideal choice. And, for people who wonder the consistency from Briggs & Stratton SAE 30 motor oil, this is a true alternative for them as well.

Oil Grade

This is a single viscosity oil rated at SAE 30, making it a good option for engines that you operate in regular weather conditions.

Engine Type

The Pennzoil 550034991 SAE 30 is particularly made to backs smaller gasoline engines and retain the performance consistently over time. This monograde oil reaches out and lubricates small areas to fight corrosion and wear.

Advanced Cleansing

Pennzoil uses a patented cleansing formula that decontaminates the engine and prevents sludge actively so that these can’t get in the way of engine performance.

Temperature Usage

Usually, this serves well at warming conditions but when the temperature reaches 60F or above this isn’t the ideal option.

  • Comply with API standards
  • Retain performance in older engines
  • Effective lubrication to keep the engine fluent
  • Resist deposit formation
  • Can’t deliver the right protection in harsh winter

6. Kohler PK2 Command SAE 10W-30

One of our favorite recommendations on the list of best lawn mower engine oil is the Kohler SAE 10W-30. Being a multi-viscosity oil you get multiple benefits to improve the overall performance of any single cylinder or smaller (4 cycles) engines.

Oil Rating

This engine oil is rated SJ. This means it is a high-quality detergent oil that you can use in wearing out (older) engines to increase its performance back to normal again.

Viscosity Grade

It’s a multi-viscosity oil classified as 10W-30. With this, the movement of machine parts becomes fast and easy. This also improves your cold starting and keeps the engine functioning properly at different temperatures (particularly between 0  to 100F range).

Wear Control

In terms of anti-wear performance, it is better than conventional automotive oils. Thanks to the use of top quality ZDDP (Zinc/Phosphate) molybdenum additives. It keeps the engine functional for the longest possible time.

Effective Lubrication

The oil keeps the engine parts clean and lubricated once the operating temperature is reached. At the same time, it reduces noise and stops varnish or deposit building.

  • Efficient noise reduction
  • Expands interval between oil changes
  • Maintains long term engine’s durability
  • Runs engine smoothly cold temperatures
  • Comparatively costly but worth the cost
  • Might fail to retain molecular integrity at high temperatures

7. Toro 38916 SAE 30 Oil

A superior proprietary product from the famous Toro brand. It is optimized to deliver the best engine performance specifically when used in smaller air-cooled engines hence the lawnmowers.

Safety Tested

This particular oil has gone through a number of strict safety tests to conclude that it fulfills and exceeds all the performance requirements needed for OEM engines.

Viscosity Grade

This Toro oil has a single grade viscosity rate of SAE 30. It means the oil is relatively thicker and best used for warming conditions. On the flip side, you should avoid using it during winter as the oil becomes thicker and may lose some flow.

Feasible Performance

When used under appropriate conditions, this oil reduces molecular shearing drastically and thus ensures optimum engine fluency. This also prevents the formation of performance-robbing deposits. All of these then provide the scope to prolong the engine’s life and match your expectations.

  • Efficient oil at a fair price
  • Backs engine’s life with prevailing power
  • Greater warm weather functionalities
  • Minimize frictions for trouble-free operation
  • According to a few users, the engine might need frequent oil changes

8. Quaker State (550035190-6PK) SAE 30

If you are looking for powerful and heavy-duty engine oil for your bigger lawnmower then this Quaker State SAE 30 deserves your best attention. Moreover, Quaker is a trusted brand that you can easily rely on to deliver consistent outcomes.

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Oil Grade

This exceptional motor oil is classified as SAE 30 in terms of its viscosity. It gives consistent thermal response under regular weather.

Service Rating

The oil meets and exceeds all the latest API service categories including SN (2011), SM(2010), SL(2004), and SJ(2001). This gives it the superiority over conventional motor oils available nowadays.

Advanced Safety

The biggest feature of this motor oil is the cutting edge wear protection to survive severe, high-temperature operation. This is engineered twice as much as what is needed to comply with industry wear standard. Consequently, this allows the engine to retain optimal performance for as many years as possible.

Consistency Test

Quaker puts a lot of emphases to test the consistency of their oil under real-world conditions. This ensures that the oil produces reliable performance covering a long distance right after an excessive idle time. So, you can be confident buying a bottle of this oil in terms of the durability and longevity it offers to the engine.

Powerful Capabilities

The industrial-grade oil features acid neutralizing additives and deters combustion acids from corroding your lawnmower engine. This locks engine performance even when your machine gets older and provide the power it needs to cut rugged grass with ease.

  • Enhance engine service life
  • Incredible oil at affordable price
  • Don’t create harmful smell or smokes
  • Industry winning corrosion resistance
  • Perform well at harsh engine condition
  • Has limitations in sub-zero weather conditions

9. Husqvarna SAE 30 4-Cycle Mower Engine Oil

Husqvarna has been a dependable name to garden equipment owners and their oils are no exception. Designed especially for small Husqvarna mowers, this premium 4-cycle SAE 30 oil will keep them in proper shape.

Engine Type

The oil provides the best protection to most air-cooled 4-cycle small lawnmowers with engine capacity ranging in between 2hp to 5.5hp.

Oil Standard

This high-quality oil is tested and comply with all API specifications and classified with a higher SJ service rating for gasoline engines.

Oil Grade & Usage

The oil is SAE 30 weighted in viscosity grade and performs better in regular weather conditions (temperature range 40-100F).

Oil Efficiency

When used under the right conditions, this oil ensures consistent in-grade performance with proper shear stability. At high temperatures, this protects against excessive viscosity decrease and provide the necessary engine power.

At the same time, the oil is formulated to fight engine wear and reduce scuffing significantly. All of these drastically improves trouble-free operation and prolong engine service life.

  • Excellent wear protection
  • Effective performance in high temperatures
  • Increase oil changes interval
  • Not appropriate for freezing conditions

10. Lawn-Boy 89930 2- Cycle Ashless Engine Oil

Our final recommendation for gas-powered lawnmowers, but that doesn’t mean you have to compromise the quality. It is especially the case when you use it for a 2-cycle Toro or Lawn-Boy engine.

Oil Type & Usage

This Lawn-Boy ashless oil is compatible with 2 cycle engines and works fine with engines in higher temperature conditions.  However, the synthetic aspect of the oil stops molecular shearing, allows it to mix easily, and promotes easier starts in all weather conditions.

Chemical Additives

This is a quality detergent oil that comes with special additives requires to keep the engine clean and free from deposit buildup. As a result, it supports the overall fuel efficiency and prevents the engine’s moving parts to lose their power over time.

Oil Retention

The Lawn-Boy 89930 uses all in one formula that engages its chemical integrity when stored for a long haul. It stabilizes the fuel and maintains its economy.


The unique composition of the oil provides safeguards against chemical breakdown in high operating temperatures. Thus it locks the engine’s performance and makes it lasts longer.

  • Doesn’t loss chemical integrity over time
  • Increase older engine’s efficiency
  • Low ash oil promotes & retain engine health
  • Overpriced for the 8 oz. bottle

Best Grade Oil for Lawn Mower – Buying Guide

First and foremost you have to check the manufacturer’s manual to figure out the best oil for your lawnmower. Despite this, understanding the key aspects is important given that engines vary by lawnmower models and their requirements aren’t identical too.

Best Oil for Lawn Mower

Types of Oil

There are three types of lawnmower oils you can use; Two-Stroke, Four-Stroke, and Synthetic engine Oil. Two-stroke oils are lightweight and best suited for small engines i.e., push mowers.

On the other hand, if you own larger machines such as walk-behind or riding lawn mowers you should opt for four-stroke engine oil. That said, synthetic oils suit all engine types. They reduce wears on engine parts and operate well at higher temperatures.

Viscosity Grade

Viscosity refers to the thickness and flow rate of engine oils at a certain temperature to lubricate engine parts. Hence, deciding on the viscosity grade largely depends on the weather you live in.

For example, thick or viscous oils get thicker at low temperatures and fail to reach small engine parts to crank. It will be harder to start the engine as a result. Thus lower grade (thinner) oils are ideal here.

  • SAE 30: Usually the best engine oil for lawn mowers in warming conditions (and smaller engines)
  • SAE 5W-30: Provide best results in freezing temperatures.
  • SAE 10W-30: Suit when the temperature fluctuates (between 0 to 100 F) and ease cold weather starting in particular. But increases oil consumption.
  • Vanguard 15W-50: The go-to oil type for continuous commercial usage.

If you switch to synthetic oils with the same rating you can save significant oil consumption.

Note: The viscosity of engine oils can be rated in two numbers. This is called the multi-viscosity grade. The first one refers to the ability of the oil to flow at low temperatures (“W”-Stands for Winter) and the other one specifies the same for high temperatures. As the number gets lower the oil gets thinner (less viscous) and the faster it will flow.


Oil Rating

Make sure the oil you are using is either OEM (Original Equipment Manufacturer’s) or API (American Petroleum Institute) (categorized as SF, SG, SH, SJ, or higher) rated for quality performance and detergent additives respectively. Besides this, check whether the oil features anti-wear chemical agents (or technology) to save the engine’s moving parts from corrosion while it runs.

Engine Capacity

Buying the right amount of oil according to engine capacity is important. It will save you a trip to the hardware store to buy the rest of the risk to store spare oils before the next change. Lawnmowers don’t require oils refill frequently means the overall quality of the spare oils could be impaired.

Engine Age

Different age of engines runs well on different grades of oil. For example, 10W-30 grade oil is ideal for modern engines and SAE 30W for aged motors.

Lawn Mower Engine Oil Brands

Briggs & Stratton

Based in the USA, the Briggs & Stratton Corporation (BRASCO) is a leading manufacturer of small engines, outdoor equipment, and related accessories. Their products represent their remarkable learning curve of 110 years, leading them to bring a number of groundbreaking job site products, residential and commercial engines.

They transformed the lawn care industry with their lightweight aluminum engine back in 1953. Now they’re an iconic name in the world of the best oil for lawn mowers that backs engine health for a long time, keeping maintenance and repair costs to the lowest.


When it comes to snowblowers,  lawnmowers, and irrigation equipment Toro is the name that stands out along with other big names in the industry. This US-based company started their venture back in 1914 and never looked back since then.

Toro is extremely popular for its world-class products that provide superior stability against harsh conditions. They have unfolded their operations in 125 countries while owning premium lawn mower brands like Lawn-Boy, eXmark, and Hayter at the same time.


Since its origin in 1984, Honda has been a famous brand in Global Market, especially around automotive sectors. Now, Honda is also the most recognized manufacturer of lawn mower parts backed with a ton of positive feedbacks from its users.

The GXV and GCV lawn mower engines are examples of their innovative creations come at the convenience of their best lawn mowers engine oils.

Their collection of high-quality engine oils offers excellent firmness against molecular sheering, oxidation, and decomposition to keep the engine run smoothly for a great deal of time.

Steps On Checking Lawn Mower’s Oil Level

It’s crucial to check oil levels in order to avoid the engine to seize. Here is how you can do it:

  • First, remove the dipstick cap by twisting it counter-clockwise using mild pressure.
  • Then remove the dipstick and wipe it with a rag to allow accurate reading.
  • Now match the grooves with the dipstick cap’s teeth and reinstall the dipstick.
  • Twist the dipstick cap clockwise with slight pressure and reinstall it.
  • Follow the first step again and see the oil level on the base of the dipstick blade.
  • Check whether it stays between the full and add marks.
  • Fill in a few ounces for low oil level and then close the cap.
  • Wait for a few moments to let the oils settle and recheck the oil level at the end.


How Often to Change Oil in a Lawn Mower?

Answer: Depending on whether you own a small or large machine the engine might last up to 25 or 50 hours of operation respectively. For a brand new device, you might need oil changes after the first five hours or whatever is specified by the manufacturers manual.

However, it is good practice to check the oil level after every use. This is because factors like high temperatures, hilly terrain, wet grass, or heavy dust might increase the frequency of oil changes.

How Much Oil Should You Add to the Lawn Mower?

Answer: The best answer is available in your lawn mower user manual. If you lost it, you can find this on the manufacturer’s website. However, depending on whether it is a walk-behind and riding lawn mower, engines can take up to 18oz and 64oz of oils respectively.

What Happens When You Add Too Much Oil?

Answer: The excess oil could get aerated or begin to burn and might prevent the engine to start properly.

Can a Lawn Mower Run Without Oil?

Answer: No. Lack of lubrication means increased frictions that could result in damaged engine parts beyond any repair.

Can You Use Automobile Oil in a Lawn Mower?

Answer: You cannot use oils designed for heavy-duty engines like cars in small engines like the lawnmowers. This is especially the case for two-stroke motors. However, you can use automobile oil in your big lawn mower engines (4 stroke engines).

Is There Any Difference Between 4-stroke and 2-stroke Oils?

Answer: Unlike 4-cycle oil, 2-cycle oil is added directly to the gasoline and burned with it. They tend to be thinner and refined with several additives to allow better combustion.

What Does SAE Stand for in the Grading of Lawn Mower Oils?

Answer: SAE represents “Society Of Automotive Engineering” who established a brilliant coding method to rate motor oils in line with their viscosity at a specific working temperature.

Wrapping Up

It’s no brainer that your lawnmower is as good as the oils you choose for it. More than that, the best grade oil for lawn mower engine ensures that it lasts as long as possible.

We hope, by now you have already nailed your best oil according to your lawnmower type. To tell the truth, each one of them has the potential to an extent for you to consider but it’s not unusual to be in two minds.

Therefore, to help you decide, we recommend Briggs & Stratton 30W Engine Oil for small engines and Briggs and Stratton 100074 5W-30 for bigger lawnmowers when quality matters the most.

Lastly, we wish you are able to back your weekend with the joy of your lawn by fueling the engine with the best oil.

Last update on 2020-10-26 at 09:54 / Affiliate links / Images from Amazon Product Advertising API