Best Dirt Bike Oil 2019: 2-Stroke & 4-Stroke

Like cars, dirt bike need mechanical attention in order for them to run at their full potential. This attention includes using the right dirt bike oils for the right job. When faced with the task to buy dirt bike oil, the majority of people get overwhelmed with the different varieties available on the market. It is important to always know exactly what you are looking for when making a purchasing decision. The wrong dirt bike oil purchase could potentially be catastrophic to the health of your motocross bike.  Throughout this article I have reviewed the best oils of 2019 for your dirt bike and broke it down into categories so that you can easily find what you are looking for.

Best Dirt Bike Oil 2019

Remember to always consult the manual of your dirt bike for specifics when it comes to oil types. There are different weight oils for 4-strokes, and pre-mix or injector safe oils for two strokes. There are also specific gearbox oils for 2-strokes and air filter oils for all dirt bikes. Below you will find 4 of the top oils for each category. Read up, and prepare for the smoothest running dirt bike you have ever had.

Best 2-stroke Oil 2019:

Best 2-stroke oil 2017Genuine Honda Hp2Genuine HondaCHECK PRICE >>>
Best 2-stroke oil 2017 - maxima castorMaxima Castor 927MaximaCHECK PRICE >>>
Best 2-stroke dirt bike oil 2017 - bel ray SL2Bel-Ray SL2 Semi-SyntheticBel-RayCHECK PRICE >>>
best 2-stroke dirt bike oil 2017 - lucas oilLucas Oil Semi-SyntheticLucas OilCHECK PRICE >>>

2-stroke motorcycle oil is much different than 4-stroke oil as it does not come in different weights. It is either pre-mix or injector safe oil. Most motocross bikes will take pre-mix oil. This means that you mix the oil with your gasoline before putting it into your gas tank. There are a wide variety of mixing ratios so consult your dirt bike manual for what will encourage the best performance out of your machine. Remember to always use measuring jugs when measuring oil to make ensure an accurate oil to gas ratio.

If your engine is considered an autolube application then look specifically for that type of dirt bike oil. Not all pre-mix 2-stroke oils comply well with autolube sytems.

To help you pick the best dirt bike 2-stroke oil, we have reviewed 4 below:

1. Genuine Honda Hp2 2 Stroke Motorcycle Oil

Best 2-stroke oil 2017Many people consider this as the best 2-stroke oil for dirt bikes that money can buy.

It is a 100% synthetic oil that is specifically designed for racing and hard use. However, it is still an amazing product to use on the daily basis. You can run a 32:1 (32 parts gas, 1 part oil) in your dirt bike without any issues. Since the formula is designed to be clean burning, you will notice that carbon deposits throughout your exhaust system will be lessened from when you were using a lower quality dirt bike oil.

The special formula consist of specific additives designed to minimize friction throughout the moving parts of your engine. As a result your motor will run cooler than ever. A cooler running engine will of course result in torque and horsepower gains as well. Do not forget that this will even boast better throttle response.


  • Clean burning
  • Capable of a crisp 32:1 gas to oil mixing ration
  • Increase overall power and throttle response thanks to a cooler running engine


2. Maxima Castor 927 2-Stroke Dirt Bike Oil

Best 2-stroke oil 2017 - maxima castorMaxima Caster 927 is another dirt bike oil that many consider to be the best 2-stroke oil out there, and with all of the features it offers, it is no surprise.

Inside this bottle you will find an idiosyncratic blend of highly refined oil by Maxima. Similar to the other oils, Maxima created a unique additive system to increase the life of your motorcycle engine and power system. This will reduce the deposits of carbon throughout your system and stop gum formation.

The oil also does a considerable job at preventing rust and/or other corrosion that can occur over time. One of the most unique features of this dirt bike oil is the power valve additive which keeps the valves functioning as they should by making sure they stay clean. The environmentally conscious will be happy to hear that Caster 927 is also biodegradable making leaks and spills less damaging to the area.

Another thing that Maxima is praised by for their 927 oil is that it creates one of the most lasting lubrications available. Where some oils will evaporate, the Caster 927 will keep on lubricating. This feature will keep your cylinder walls, bearing journals, and other extremely high temperature areas working with low friction.


  • High quality additives to prevent build ups
  • Very high vaporizing temperature
  • Maintains a cool running engine for maximum performance


3. Bel-Ray SL2 Semi-Synthetic 2-Stroke Oil

Best 2-stroke dirt bike oil 2017 - bel ray SL2If you are into motorsports in anyway then you have probably head of Bel-Ray. Bel-Ray has been making power sport oils since the 1970’s and other oils much before that. Needless to say, if you are looking for a company with a real history in performance, then look no further. The S2L semi-synthetic oil is no exception to Bel-Ray’s high quality line of oils.

This semi-synthetic blend has been created to work in all two stroke systems. Yes, that includes both auto lube and pre-mix applications. It provides outstanding performance throughout hard and light use. This means you can use it while pounding out motos without worrying about your engine getting too hot (although it is never a good idea to push a dirt bike past its limit).

Inside you will find additives to reduce carbon build ups. This dirt bike oil of course also reduces exhaust smoke thanks to its clean burn. The SL2 semi-synthetic also supports gas to oil mixtures of 50 parts gas to 1 part oil meaning you may need less than lots of other oils (depending on your mx bike setup as well of course).  This is easily another contender for the best 2- stroke dirt bike engine oil.


  • Bel-Ray has been around for a long time and knows what they are doing
  • Can be used for both autolube and pre-mix applications
  • Reduces exhaust smoke
  • Supports mixing ratios up to 50:1


4. Lucas Oil Semi-Synthetic 2-Cycle Oil

best 2-stroke dirt bike oil 2017 - lucas oilIf you know of Bel-Ray then chances are that you have probably heard of Lucas Oil as well. Lucas oil is a company that was founded with the intention of only making the highest quality of oils. In other words, if it’s Lucas Oil, then it is going to perform.

Lucas is an American company which is another reason for their huge success throughout the USA (and Canada). Lucas Oil’s semi synthetic 2-cycle oil is the final oil on this list. Have we saved the best for last? Perhaps. We will let you decide.

2-stroke oils for dirt bikes must have certain qualities. The semi-synthetic dirt bike oil by Lucas oil nails these qualities on the head. The oil is renowned for its smokeless burn which is present thanks to its mineral oil synthetic blend.

This smokeless formula results in very little carbon deposits and corrosion. So you can expect your piston rings to and other susceptible areas of the engine to last longer than usual. The dirt bike oil also contains exclusive detergents that result in a full thorough burn. The equation is simple, a more thorough burn equals less emissions and more power. The oil is suitable for air-cooled engines and contains very little ash.


  • Smokeless burn
  • Maintains engines for a long life
  • No filter clogging.
  • Full burn means more power and a lower fuel consumption


Best 4-stroke dirt bike oil 2019:

best 4-stroke dirt bike oil 2017 - YamalubeYamalube All PurposeYamalubeCHECK PRICE >>>
4-stroke dirt bike oil 2017 - motulMotul E-Tech 100 SyntheticMotulCHECK PRICE >>>
4-stroke dirt bike oil - maximaMaxima Premium 4MaximaCHECK PRICE >>>
best 4-stroke dirt bike oil - castrolCastrol Power 1SyntheticCastrolCHECK PRICE >>>

Unlike 2-stroke oil. 4-stroke oil is not pre-mixed with gas. It is more similar to the type of oil that you would put into your car. 4-stroke dirt bike oil can get a bit confusing as it comes in a variety of different weights. To keep things simple, consult your dirt bike manual and find what weight of oil your bike should use. Your 4-stroke dirt bike will likely use 10w-40 oil as that is one of the most common options.

To help you find the best 4-stroke oil, we have reviewed our top 4. You will find them listed below:

1. Yamalube All Purpose 4 Four Stroke Oil

best 4-stroke dirt bike oil 2017 - YamalubeIf you ride a Yamaha or own any Yamaha power equipment, then chances are that you have been recommend Yamalube by someone. Is this recommendation justified? Absolutely.

Whether or not you ride a Yamaha motocross bike, Yamalube is an oil that will perform to your expectations. It is a performance blended mineral oil designed to give your engine a long fulfilling life. It is perfect for use in mx bikes but will also work well in other engines such as ATVs and side by sides.

Of the upmost importance is clutch performance, and the Yamalube all-purpose dirt bike oil is certified to exceed the requirements of JASO MA to assure you that your wet clutch performance while using this oil will be second to none. Clean additives are included in the oils makeup which allows your dirt bike’s engine components to stay corrosion and dirt free. If you do ride a Yamaha and are unsure of other oils use Yamalube. It will give you peace of mind purely because it is designed specifically for your dirt bike.


  • OE Yamaha oil
  • Lasts long
  • Clean additives
  • Well priced


2. Motul E-Tech 100 Synthetic Oil

4-stroke dirt bike oil 2017 - motulMotul E-Tech 100 Synthetic Oil is perfect for people who have dirt bikes that can also be used on the road.

The blend of esters and polyalpaolifine into a synthetic base stock creates an oil that is unmatched in its ability to protect in both high performance, and stop and go urban situations. Like any good 4-stroke oil, this blend proves to be great with basically all internal components including wet clutches and gear boxes.

This 100% synthetic oil creates an electrochemical bond to moving parts in the engine. This means that you do not have to worry about dry components. Your components will be fully lubricated creating a low friction environment for those moving parts. Motul E-Tech has been known to keep engines working for a long time and is trusted by many industry professionals.


  • Electrochemical bonding for amazing coverage
  • Great for urban and off-road use
  • Trusted name


3. Maxima Premium 4 Motorcycle Engine Oil

4-stroke dirt bike oil - maximaMaxima made our 2-stroke list, so you should not be surprised to see the brand back on our 4-stroke oil list. The premium 4 oil by Maxima is exactly what you would expect it to be, and more.

This dirt bike oil is made up of a highly researched and advanced formula. The blend is exclusive to petroleum base stocks with next generation anti-wear and anti-shear additives. This simply means that it will keep your engine internals in top notch shape. This is also one of the most stable oils in terms of viscosity. Which is extremely important for consistency when riding your dirt bike.

Maxima made sure that this oil is also suitable for both air and water cooled engines, so if you are a 4-stroke rider lost in a sea of choice and unknown specifications, it may be a good option for you. Furthering the list of additives is the ant scuff additive which helps the oil when your engine is really being pushed. This includes times of extreme performance such as a hot motocross race where engine temperatures are at their peak.

Wet clutches operate exceedingly well with the use of this dirt bike oil, likely because of the oils great cooling ability. If you have been using cheaper oil then you may even notice that your motocross bike starts easier when hot while this dirt bike oil is being used. Again that would be because of its stable viscosity and superb cooling properties. This oil is also turbo certified.


  • Turbo certified
  • Advanced additives
  • Maintains stable viscosity
  • Superb cooling


4. Castrol Power 1Synthetic 4T Motorcycle Oil

best 4-stroke dirt bike oil - castrolCastrol dirt bike oil is one of the most prominent and trusted oil brands out there today. That is no surprise when you find out that they have been building their name since 1899 when the company was founded for train and heavy machinery lubricants. Needless to say, Castrol knows lubricants. A company like that can only lead to good things when you put their knowledge into your dirt bike. The Power 1 motorcycle oil is a perfect example of real dedication, creating a great product.

The Power 1 oil by Castrol is a synthetic oil that is derived from racing. Motocross racers and hard riders, read on. This formula features Trizone technology which stands for 3 critical zones of a motorcycle; the engine, gearbox and clutch.  The technology will keep all three running cool and with little friction in even the highest demanding situations. Castrol claims that the oil will even help increase acceleration. Although this is hard to actually measure, it is still worthy to point out and consider. This dirt bike oil works great with both air-cooled and water-cooled engines. Similar to Maxima’s performance 4 oil, the Power 1 also has great viscosity stability.


  • Trizone technology
  • From a company with a long history in oil
  • Race derived
  • Highly stable


Best dirt bike gear oil 2019:

best dirt bike gear oil 2017 - hondaHonda Transmission OilHondaCHECK PRICE >>>
dirt bike gear oil 2017 - maximaMaxima 80W90 PremiumMaximaCHECK PRICE >>>
best dirt bike gear oil 2017Silkolene CompSilkoleneCHECK PRICE >>>
best dirt bike gear oil 2017 - bel rayBel-Ray Gear SaverBel-RayCHECK PRICE >>>

If you are like most people, you understand the qualities to look for in engine oil. However, gearbox specific oil is totally different and it is important to understand why you should be using high quality gearbox oil. Gear oil is made with the sole intention to protect clutches and gearboxes. The oils have a high viscosity, and other special qualities that not only lubricate and cool, but also keep your gearbox free from contaminates stopping on the hard surfaces inside. The dirt bike oil protects against corrosion, rubbing, scoring, and pitting. Overall it should result in smooth, quiet shifting, and long lasting gear box to boot.

Below we have listed and reviewed the best 2-stroke gear box oils available so you can buy worry free:

1. Honda Transmission Oil

best dirt bike gear oil 2017 - hondaHonda lovers will be pleased to see this HP transmission oil on our recommendation list. It should also come as no surprise that this should be your go to dirt bike transmission oil if you ride a Honda dirt bike. However, do not be fooled by the brand, it will work great on any motorcycle.

The HP transmission oil is made up to have shear stability and extremely high film strength. Together these qualities help to reduce wear inside your gearbox. During intense use, gearboxes like any moving parts, get hot. The HP oil has been created for thermal stability meaning that the viscosity of the oil should stay consistent throughout different usage intensities. It will also slow the breakdown of the oil making it last much longer and ensure it does not foam.

While shifting this oil does its job amazingly. Special additives in the oil further lower the friction of moving parts assuring your smooth shift and consistent performance gains. This is achieved through minimalizing the effects of drag between gears. Further additives have been included with anti-sheer properties to increase the life of your clutch and stop it from slipping.


  • Honda OE
  • Stable in everyway
  • Leave extremely low friction between moving parts
  • Helps ensure a long clutch life


2. Maxima 80W90 Premium Gear Oil

dirt bike gear oil 2017 - maximaMaxima’s premium gear oil nears perfection as with most of their other oils.

This petroleum blend gear oil has been made with high performance shaft driven motorcycles in mind. Inside the unique formula is high sheer strength polymers which basically prevent the oil from breaking down. Ultimately it leaves you with a long lasting oil that as a result will lead to long lasting gears.

This oil is good for use in all motorcycles that have separate areas for transmission or clutch fluid. It is even good for use with hypoid gear applications. In case you do not know what that is here is a laymen’s explanation. Hypoid gears are spiral bevel gears where the axis does not intersect with the other axis of the meshing gear. If that still sounds new to you probably have never heard of it and do not need to worry for your dirt bike application.


  • Designed for high performance bikes
  • Tough oil that does not break down quickly
  • Good for use in any motorcycle application with a separate transmission fluid


3. Silkolene Comp Gear Oil

best dirt bike gear oil 2017Comp Gear Oil by Silkolene is the real deal when it comes to off-road performance gearbox oil.

Comp Gear Oil is an ester-based racing oil that is semi-synthetic and ready to prove itself in any circumstance. The oil has been tested to work well with both aluminum and steel clutch plates making it an easy buy. The oil gives smooth gear changes and great clutch action. The drag of gears is reduced by the low friction formula which further results in a low wearing gearbox and less power lost through shifts.

This 2-stroke gear oil makes use of Silkolene’s Electrosynte Power Technology. This technology can get to sound a little scientific so for the purpose of this article, I will break it down easily. Powerful forces in the oil make low friction molecules attach to high stressed metal components. So when you are pushing your gearbox like during a race, the oil will bond and lubricate all components that are undergoing a lot of movement to ensure your gearbox stays consistent and in excellent shape.


  • Silkolene’s Electrosynte Power Technology
  • Low friction between moving components
  • Long lasting oil
  • Designed for off-road racing


4. Bel-Ray Gear Saver Transmission Oil

best dirt bike gear oil 2017 - bel rayWell the name says it all as for as this oil goes. Gear Saver by Bel-Ray is a top notch two stroke gear oil that will leave your transmission working as it should.

It has been manufactured specifically for motorcycles that make use of wet clutches. It provides the benefit of superior clutch engagement which could mean better starts for you out on the track. Maybe even leading to a holeshot. The formula makes up a free flowing, high viscosity oil that fully coats the inside of your gearbox to assure everything is well lubricated. Gear Saver oil encourages buttery smooth shifts by keeping gear friction low. It also helps prevent clutch and gear rub leading to a long lasting, and quiet transmission.


  • Positive clutch engagement
  • Smooth shifting
  • Coats gears fully to prevent wear and encourage a long life.


Best air filter oil 2019:

Best air filter oil 2017 - maximaMaxima Foam Filter Oil TreatmentMaximaCHECK PRICE >>>
best air filter oil 2017 - bel rayBel-Ray Foam Filter OilBel-RayCHECK PRICE >>>
air filter oil 2017 - yamalubeYamalube Foam Filter OilYamalubeCHECK PRICE >>>
best air filter oil 2017 - lucas oilLucas Oil High PerformanceLucas OilCHECK PRICE >>>

Adding a coating of oil to your air filter can seem like an odd idea to people who are not used to the world of off road motocross and ATV racing and riding. However, it is a necessary step towards keeping your dirt bike functioning in top form.

The oil, once applied and then let dry, is specially designed to keep even more debris out than just the filter. Good quality oil filter oil will keep your engine components and oil clean a functioning well. As a result it will even decrease the amount of time that you need between engine oil changes. Understanding what filter oil to use can be a challenge as most dirt bike manuals will not recommend a specific one. Luckily for you we have reviewed our favorite motorcycle air filter oil below:

1. Maxima Foam Filter Oil Treatment

Best air filter oil 2017 - maximaAs with what seems to be all of their products, Maxima created another amazing oil that does an outstanding job.

This Foam Filter Oil by Maxima has be formed after 3 years of dedicated research and development. It is a fully synthetic polymer formula that allows for between 4 and 13 percent more air flow while keeping up to 8 percent more contaminants from entering through the air filter. The oil has water and gas repelling properties that keep the fluids from entering through the air filter.

This is especially helpful for off-road riders that often find themselves at river crossings or riding in the rain. As many of you know, air filters can be quite temperamental when it comes to chemical damage. Thankfully this oil by Maxima has been tested and proven to not cause any damage to the make-up of the air filter. Using this product will keep your engine and engine oil cleaner than ever.


  • Formula repels water and gas
  • Extremely well research formula
  • Keeps engine oil cleaner than ever


2. Bel-Ray Foam Filter Oil

best air filter oil 2017 - bel rayBel-Ray’s Foam Filter Oil is a popular choice among both professional racers and weekend warriors. The formula has been proven to work time and time again in virtually all situations.

Bel-Ray Foam Filter Oil is designed to work for street, off road and high performance racing applications. It can be safely used on any foam filter and will not corrode the filter itself or its bond. Like all good quality foam filter oils, this one comes with the ability to increase airflow through your air filter. The oil itself has been formulated to be ultra-viscous which creates an oil barrier to capture micron-sized particles before they have the chance to enter through you air filter. Bel-Ray’s Foam Filter Oil is also waterproof which will prevent clogging it wet conditions.


  • Ultra-viscous formula
  • Waterproof to prevent clogging
  • Can be used in all riding situations without fail


3. Yamalube Foam Filter Oil

air filter oil 2017 - yamalubeYamalube by Yamaha has been credited with creating some of the best possible oils for your motorcycle. Their dirt bike air filter oil is no exception (also used as ATV filter oil).

Yamalube Foam Filter oil is a petroleum based synthetic oil that will keep debris out of your engine as well as any other oil for air filters. Their formula is designed to create a catch for unwanted dirt and dust, preventing it from entering into your dirt bike through the intake tract. Like other foam filter oils, the Yamalube product will also prevent water from getting through your filter and into your engine. All and all, this is a high quality oil built by a company that knows a thing or two about dirt bikes.


  • Yamaha made
  • Catches unwanted debris
  • Waterproof formula


4. Lucas Oil High Performance Foam Filter Oil

best air filter oil 2017 - lucas oilLucas Oil has been known for their innovation when it comes to making performance oils. Of course, their foam filter oil is no exception to this.

Lucas Oil High Performance Foam Filter Oil has been formulated to have a slight tackiness to it. This ensures the oil will stay in place on the air filter and will increase the performance throughout the time between services. It is a low solvent, low viscosity oil that will easily penetrate into the air filter to stop dust, dirt, and sand from entering your engine.

Like other high quality filter oils, the Lucas Oil filter oil acts as a moisture barrier to prevent water and other fluids from being sucked in through your dirt bike intake tract. It is good for use in all temperatures, where some other cheap oils tend to clog once the weather turns cold. Another nice feature is that the blue color makes it easy to see when the filter is fully covered in oil (most other foam filter oils are of a similar color). Lucas Oil products are used by the Troy Lee Designs team, so their performance is practically guaranteed.


  • Works well in cold applications
  • Blue in color
  • Tacky to help keep the oil in place



If you are searching for oils, it is important to know the variances that exist. There are different oils for different applications and putting the wrong one in the wrong spot can lead to mechanical failures and poor running motorcycles.

With any luck, the article above would have shed some light on your oil confusion and you now feel confident to purchase for yourself. Remember to stick to what works. Do not buy a poor quality oil just because you find a good deal on it. Using high performance fluids in your dirt bike will ensure that it lasts for a long time and runs exceptionally well. Remember to also consult your manual for what is recommended by the manufacturer. They built the bike, so they will know what works for it. Purchase any of the oils on this list and your will surely not be disappointed.

With great oil you need great pistons, find the best selection of 2019 pistons here!

Maxima Castor 927 2-Stroke




Value for money


Environmentally friendly



  • High quality additives to prevent build ups
  • Very high vaporizing temperature
  • Maintains a cool running engine for maximum performance