Best Oil for KLX 140 – Recommended Oil Types & Capacity

If you have owned a Kawasaki KLX140 motorcycle, like numerous lucky off-roaders, you might know how stunning this bike is. However, when you’re planning to conquer those hardest terrains with your KLX 140, you should make sure that your bike is performing at its top level.

That’s the point where you need to pick the best oil for KLX 140. Nevertheless, engine oils can vary greatly in quality, while remaining hidden under glamorous advertisements. However, thanks to the internet, riders can now find a wide variety of quality engine oils right at their doorstep.

In reality, many people do not have the time or knowledge to properly choose an engine oil among tons of options. Thankfully, you’re wise enough to put your step in the right place. Yes, here we’re going to present some of the best oils for KLX 14o that will make your investment a worthwhile decision. 

Recommended Oil Types for KLX 140

When it’s about improving your KLX 140’s performance, selecting the right oil can make a big difference. However, there are many types of oils that can be used in the KLX 140. Choosing the right type of engine oil is important not only because it will improve performance, but also because different oils can have different friction characteristics that can affect bike handling.  Here are six types of engine oil that we recommend for use with the KLX 140: 

  • Semi-Synthetic motor oil (10w-40):

10W40 Semi-Synthetic motor oil is recommended in all conditions. This is because it has a high level of anti-wear agents, which helps protect the engine from damage. Semi-synthetic oil is made of synthetics and petroleum oils, which means that it resists fouling and reduces the risk of pre-ignition. 

In addition, 10w-40 motorcycle oil has a high level of heat resistance, which allows it to withstand high temperatures without damage. That makes it an ideal choice for use in hot climates, such as those found in Arizona or Texas.

  • Synthetic motor oil (SAE 5W-30 ):

If the engine has not been run for 10,000 miles or more and the air-fuel ratio is at or below 12.0:1, then SAE 5W30 synthetic motor oil should be used. SAE 5W30 Synthetic oil is recommended for the KLX 140 in all conditions. 

This synthetic motor oil has a high-quality performance and is not as vulnerable to weathering and oxidation as regular engine oils. It can also resist sludge and varnish build-up, making it a good choice for motorcycles that are used in dirty or dusty environments.

  • Multi-grade motor oil (15W-50):

This type of oil is made up of 50 percent mineral and petroleum-based oils. Mineral oil provides good cold-weather performance, while the petroleum base offers good protection in the hot engine environment. This combination makes this type of motor oil versatile. 

15W-50 motor oil is recommended when your bike is used in extreme conditions, such as race tracks or off-road trails. This type of oil has been specifically designed for extreme riding situations and will help protect your engine from wear and tear.

FactorSynthetic(10W40)Semi-synthetic(5W30) Multi-grade/Mineral(15W50)
Viscosity at Low-TemperatureViscosity of 10Viscosity of 5Viscosity of 15
Viscosity at High-TemperatureViscosity of 40Viscosity of 30Viscosity of 50
ThicknessThick oilThin-oilModerately thick
Fuel EconomyLessBetter fuel economyModerate fuel economy

KLX 140 Engine size and capacity

The engine size of KLX 14o is 144.00 ccm (8.79 cubic inches) which needs 1.22 quarts of engine oil to fill it up.

How often should you change the oil in a KLX 140? 

KLX140 motorcycle is one of the most popular dirt bikes for beginners. This off-road bike is equipped with a liquid-cooled, four-stroke engine. Like all engines, the KLX140 will require maintenance and regular oiling to run at its best. 

Generally, you should change the engine oil of your KLX 140 once or twice a year. However, depending on the type of engine oil you’re using in your KLX 140 the frequency of changing motor oil can vary. Here is how often you should change the oil in a KLX 140 based on engine oil type:

Oil TypeFrequency
SyntheticAt least once in a year or after 7,000 to 10,000 mile
Semi-syntheticAt least once in a year or 5,000 to 6,000 miles
MineralAt least once in a year or after 2,000 to 3,000 miles of riding

Important Notice

Kawasaki has announced a change to the oil it recommends for its KLX140 motorcycles. Starting with the 2017 model year, Kawasaki now recommends using motorcycle synthetic oil in place of conventional oil. The switch is based on results from a study that shows synthetic oil provides better performance and reliability when used in Kawasaki's KLX140 motorcycles.

1 – Kawasaki Genuine OEM Motor Oil Change Kit for KLX140 

Best Oil for KLX 140

Kawasaki has released a genuine OEM oil change kit for the KLX140 motorcycle. This new kit includes all the necessary parts, including a new filter and oil. The kit is designed to help keep your Kawasaki running smoothly and efficiently. If you’re looking to keep your KLX140 running like new, this is the perfect solution.

Unlike conventional motor oil, it is formulated specifically for the KLX140 and provides superior performance. This synthetic motor oil boasts a blend of base oil, additives, and dispersants that helps protect against wear and tear.

While significantly reducing friction and preserving lubrication for an extended period. Additionally, it has been tested to meet or exceed all the factory specifications.

What’s more? This kit comes with all the necessary parts to change the engine oil and filter. The kit is designed to be easy to install and requires no special tools. All the instructions are clear and concise, making the job a breeze. 

  • Outstanding wearing protection nImproved shift qualitynEnsure prolonged service life of the engine and bearingnEnhance clutch performance and dependabilitynReduced oil volatilitynReasonable price
  • Slightly lower fuel economy nPossible additive precipitation

Our Verdict:

Arguably, Kawasaki Genuine OEM Motor Oil is a great choice for riders of the KLX140. From its outstanding wearing protection to enhanced performance, it has everything to claim itself as one of the best oils for KLX 140. In addition, it’s affordable, making it a great value for riders on a budget. 

2 – Kawasaki K61021-302 4-Stroke 10W40 Motor Oil

Kawasaki K61021-302 4-Stroke 10W40 Motor Oil

Introducing another outstanding motor oil has earned immense popularity among KLX 140 fans. The Kawasaki K61021-302 10W40 Motor Oil is a high-performance oil that is designed for use in the Kawasaki KLX 140 dirt bike. This oil is made of a premium blend of synthetic and semi-synthetic oils, providing excellent protection against engine wear and tear. 

However, Kawasaki K61021-302 motor oil is intended for use in engines that are running at 10,000 or lower RPM and have a displacement of 141 cc or less. It is also suitable for use in electric start motors. According to the manufacturer, this oil is capable of providing superior performance and protection when used in your motorcycle.

It features Kawasaki’s advanced synthetic technology that helps reduce friction and wear in your engine, while also providing excellent protection against dirt, dust, and water. In addition, it provides enhanced performance and fuel economy, making it the perfect choice for those who are looking to improve their motorcycle’s performance.

This oil also helps to reduce noise and emissions while providing optimum lubrication for the engine. Even though recommended viscosity varies depending on the model, typically this oil can be used at temperatures between 0F and 200F. 

  • High and maximize performancenExcellent dirt dispensing capacitynOutstanding thermal stabilitynHigh viscosity indexnImproved shift qualitynEnhanced transmission performance
  • Tend to thicken up at the low temperaturenLacks performance enhancements

Our Verdict:

If you love to roar on the tough terrains at high temperatures, this will is best suited for you. Its low viscosity makes it ideal for high RPM engines, and its additives keep the engine running smoothly. It also protects against wear and corrosion.

3- YamaLube 10W40 All Purpose 4 Four Stroke Motorcycle Oil

YamaLube 10W40 All Purpose 4 Four Stroke Motorcycle Oil

If you’re like most KLX140 riders, you might be habituated to sticking with a couple of variations while choosing motor oil. But what if you only need one oil that can be used on all of your machines? That’s where YamaLube 10W40 All Purpose Motorcycle Oil comes in. This oil is designed to be a universal lubricant, and it can be used in both street bikes and dirt bikes.

YamaLube 10W40 All Purpose 4 Four Stroke Motorcycle Oil is a synthetic motor oil designed for use in four-stroke gasoline direct injection (GDI) engines. It is a high-performance product that offers outstanding protection against wear and tears on your engine. Additionally, it is a great choice for those who ride in hot weather conditions as it provides superior thermal protection.

This oil is formulated to meet or exceed the requirements of most major motorcycle manufacturers and is a great choice for riders who want an oil that will protect their engine and provide consistent performance.

It is made from a special blend of synthetic and API-certified components that protect engines against wear and tear while reducing friction and providing superior performance. This versatile oil is suitable for both single and twin cylinder engines, making it the perfect choice for most riders.

  • Low sludge propertiesnExcellent protection and performancenVersatile engine oilnOutstanding thermal protectionnReduced friction and noise
  • Not suitable for use in cold weather climatesnUsers who require higher performance should avoid it

Our Verdict:

I would recommend it to anyone looking for an all-around oil for their KLX 140 dirt bike. It has great viscosity and protects your engine against wear and tear. It’s also affordable, which is an added bonus. 

How to Change KLX 140 Oil

After a certain period, KLX140 engine oil can become thin and worn down, causing it to break down and lose its ability to lubricate the engine properly. This can lead to impaired performance, reduced fuel efficiency, and even engine failure. So, don’t forget to change the engine oil. u003cbru003eu003cbru003eLuckily, changing engine oil is a quite simple process. So, you can do it yourself with almost zero knowledge, you just need to know different parts associated with the engine. DIY oil replacement will save some bucks. Here is the step-by-step process:u003cbru003eu003cbru003e

u003cstrongu003eStep 1 – Remove the Engine Coveru003c/strongu003e

Disconnect the battery, then pull off the plastics on both sides of the engine. The engine should now be exposed.

u003cstrongu003eStep 2 – Drain out the old oilu003c/strongu003e

The best way to do this is with a drain pan. If your drain pan has a strainer, you can use that to get the oil into the pan. Otherwise, just pour the oil out of the engine.

u003cstrongu003eStep 3 – Add New Oilu003c/strongu003e

Pour the oil into the new oil container, and screw on the lid. Use a funnel if necessary to avoid spilling any of the oil onto the ground. Replace the engine cover, then reconnect the battery.

u003cstrongu003eStep 4 – Put it back togetheru003c/strongu003e

Once the engine is filled, replace the plastic on both sides of the engine. There are two bolts that go into the bottom of each plastic piece, so you’ll have to put them together by hand. You may have to wiggle it a little bit before they’ll click in place.u003cbru003eu003cbru003eOnce you’re done, the engine should be good to go. You will want to clean up the oil mess from your garage, and then enjoy your new engine!

Frequently Asked Questions

u003cstrongu003eWhat kind of oil does a Kawasaki KLX 140 take?u003c/strongu003e

Usually,  Kawasaki KLX 140 takes a 10W-40 motorcycle oil.

u003cstrongu003eWhat type of Oil Filter is suitable for KLX140?u003c/strongu003e

A cartridge-style oil filter is a good option for the KLX140. This type of filter is easy to install and remove, and it traps contaminants in the oil.

u003cstrongu003eWhat if I don’t change the engine oil in My KLX140?u003c/strongu003e

If you don’t change the engine oil in your KLX140, the engine will eventually wear out and need to be replaced. The engine oil helps to lubricate the moving parts of the engine and protect it from corrosion. If it isn’t replaced regularly, the engine will start to wear down and eventually break.

Final Words

The best oil for KLX 140 is the one that best suits your needs. Consider the climate you live in, the type of terrain you ride on, and your own riding style when making your decision. However, if you’re still hesitant to make your decision, we recommend Kawasaki K61021-302 4-Stroke 10W40 Motor Oil for you. 

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