5-Best Four-Stroke Dirt Bike Engine Oil

5 Best Four-Stroke Dirt Bike Engine Oil

Choosing the proper oil for your dirt bike’s best performance doesn’t have to be challenging. 4-stroke oil aims to keep the engine lubricated. Four-stroke dirt bike oil is available in various weights, such as 10w-40, 20w-50, and so on. It is not combined with gas in any way. So, which oil should you use now? Easy, The second step in getting the correct oil for your dirt bike is to consult your operating manual to see what oil the supplier suggests.

When cleaning your dirt bikes, dirt riders frequently experience a loss of vibrancy in their engine oils. Kawasaki engine oil is used to maintain viscosity while improving engine performance. Its lubricating characteristics help to provide a quieter transmission and better gear shifts. Here you will see the five best stroke dirt Bike engine oils that you can use to keep your engine greasy and to experience better performance.

1- Castrol Power1 4T 10W-40 Engine Oil

Castrol Power

Key Features

  • Formulated with Trizone technology to protect all 3 critical zones: engine, clutch and gearbox
  • Race derived technology for maximum engine acceleration
  • Extreme high temperature air-cooled performance and water-cooled engine performance
  • Excellent shear stability to prevent viscosity breakdown
  • Exceeds API SL and JASO MA-2

Castrol POWER1 4T 10W-40 is a high-performance segment engine oil designed to meet the acceleration requirements of today’s 4-stroke motorbike engines. Friction can cause bikes to lose up to 30% of their power without the rider realizing it. Castrol POWER1 4T with Power Release Technology improves performance by lowering friction and giving you better acceleration. It’s appropriate for all 4-stroke motorcycles, carburetor, and fuel-injected, with API SN (or below) and JASO MA or MA2 standards.

The findings of a speed test were used to make this decision. The test mimics a 30-second wide-open throttle acceleration in one gearbox from a single lap. The distance traveled is recorded at the end. The following suggestions are on our knowledge and information gathered from various sources about the engine make, bottom sizes, and specs of the applicable bike models that are publicly available.

Why should you buy it?

Castrol Power 4T 10W-40 is a worth buying

Product as this engine oil is highly designed

To meet speed requirements of motorbike engines by reducing friction which will give you a better performance.


  • It gives you Excellent Acceleration
  • It provides you Excellent Protection
  • It gives a Smooth Riding
  • Keeps the Engine Cool
  • Enduring performance up to 95% of power


This engine oil can not substitute for scooters.

2-Maxima Premium4 10W-40 Engine Oil

Maxima Premium

Key Features

  • Maxima’s Premium4 is a superior product featuring advanced additive technology in the development of highly stable and long life multi-grade motorcycle specific oil
  • By using an exclusive blend of petroleum base stocks and advanced anti-wear, anti-shear additives, this product assures viscosity stability for all air and water-cooled 4-cycle engines with integrated transmissions
  • This formula also has extra anti-scuff additives to handle extreme loads and peak temperatures in high performance engines
  • Formulated for Wet clutches, the all weather formula reduces friction and engine temperatures and makes for easier starts
  • Crafted from a premium petroleum base, Premium4 is Turbo certified, exceeding all JASO-MA M/C 4T and API SG/CC Specs

It’s incredibly stable, and it’ll last a long time in your bike’s engine. It endures high temperatures and extreme loads in high-performance motors. It is developed with supplementary anti-scuff ingredients. Anti-wear and anti-shear chemicals are mixed into the oil’s petroleum base. Even when your bike is under compressive stresses, you can expect maximum performance.Premium4 from Maxima is a superb product that uses modern additive technology to provide a highly stable and long-lasting multi-grade motorcycle oil. This product ensures viscosity consistency for all air and water-cooled 4-cycle engines with linked transmissions by employing a unique blend of petroleum base stocks and modern anti-wear, anti-shear additives. Extra anti-scuff chemicals have been added to this recipe to manage heavy loads and peak degrees in high-performance engines. Constant Rheology Reduces engine heat and friction. System for high-temperature additives. For use with wet clutches. All-purpose formula, it’s simple to start, and it reduces engine wear. This oil is suitable for both water-cooled and air-cooled engines. Once you create your engine, Maxima advises it for a wet clutching, and you can have a smooth start.

Why should you buy it?

It is a go-to product. It’ll be ideal for young riders or those who don’t do much maintenance on their bikes. The oil will remain clean for an extended period, allowing you to keep enjoying the excellent performance.


  • Formulated for wet clutches.
  • Crafted from a premium petroleum base.
  • Reduce engine wear.
  • This includes extra anti-scuff ingredients to manage loads and peak temperatures in high-performance engines. 


It does not contain any side indicator to let you know how much oil is left.

3-Valvoline 4-Stroke SAE 10W-40 Engine Oil


Key Features

  • Enhanced anti-shudder protection for smooth shifting and maximum power transfer
  • Developed with anti-wear technology to help improve transmission durability
  • Engineered with a proprietary blend of base oils and advanced additives to provide better oil flow at low temperatures and greater film protection at higher temperatures

Quality base oil formulas with cutting-edge additive techniques enable riders to get the most out of their motorcycles. It contains shear-stable viscosity improvers that prevent oil film breakup and keep the oil liquid at high temperatures. ValvolineTM 4-Stroke Bike Oil is formulated with proprietary mixes of premium base oils and cutting-edge additives. This will lead you to get the most out of your bike engine. Under high RPM and high-temperature circumstances, the thermally stable formula helps maintain proper lubrication and protects the motor. The high thermal stability formula helps keep appropriate lubrication and protects the engine. Generally, pro safety has been improved for smooth shifting and maximum power transfer. It is designed with a specific blend of base oils and advanced additives to enable enhanced oil flow at room temperature and more excellent film preservation at extremely high temperatures and designed with anti-wear technology to help increase transmission longevity.

Why should you buy this?

It would help if you bought this as it has the best frictional qualities for power supply, smooth moving, and wet clutches safety, so it is a great product to buy.


  • It helps  improve transmission durability
  • It provides better oil flow at low temperatures and more excellent film protection at higher temperatures.
  • It gives protection for smooth shifting and maximum power transfer
  • It is a synthetic motorcycle engine oil 
  • It helps to increase transmission longevity.


Because they put a motorcycle on the label, they charge extra for the same oil.

4-Quicksilver SAE 10W-30 Engine Oil


Key Features

  • Formulated to protect against corrosion and excessive wear
  • Designed for use with all 4-stroke marine engines
  • Offers outstanding strength and viscosity retention
  • 1 gallon bottle

A high-grade blend of synthetic and mineral-based stocks is used in the Quicksilver marine engine oil. Superior engine corrosion protection and viscosity retention are both provided. You won’t have to be concerned about the state of the oil as you race around the circuit. Quicksilver 4-stroke marine engine oil is the result of more than five years of scientific research, testing, and production, so you know you’re receiving a good product. Clean oil is critical for decreasing friction and preventing damage to internal components, allowing engines to last for many years. This 4-stroke 10W-30 marine oil has been rigorously tested to offer exceptional corrosion and take precautions for sterndrive and outboard applications. Quality synthesized and mineral-based stocks meet or exceed all 4-stroke oil specifications in the marine sector, including FC-W and FC-W Catalysis Compliant. For almost 65 years, the Quicksilver brand has been the pioneer in offering uncompromised engine oils, components, and accessories to the maritime industry. Quicksilver is the leading seller of Mercury Marine OEM replacement engine parts, oils, and accessories, but they also work with all OEM brands in the marine and power-sports industries. It has built a loyal fanbase by supplying high-quality items that have been put through the wringer in some of the most demanding situations and testing methods. No other aftermarket manufacturer can match Quicksilver’s degree of research and design; when you buy Quicksilver, you’re getting performance, protection, and peace of mind.

What should you buy this?

It is a product you must buy Quicksilver 4-stroke marine engine oil is the result of more than five years of research, testing, and development. When you buy Quicksilver, you know you’re getting a high-quality product that allows the engine to last long for years.


  • It’s made to keep corrosion and excessive wear at bay. 
  • All 4-stroke marine engines are compatible with this product. 
  • It gives exceptional strength and viscosity retention.


Synthetic oil production is a far more complicated procedure for Vehicles that are brand new. For brand new or newer automobiles, synthetic oil is not suggested Pollution. Synthetic motor oil is a serious pollutant in the environment.

5-Kawasaki 4-Stroke SAE 10W-40 Engine Oil

Kawasaki 4-Stroke

Key Features

  • Outstanding engine and bearing wear protection.
  • Prolonged engine life through improved engine cleanliness and reduced oil volatility.
  • Improved shift quality through enhanced transmission/clutch performance and dependability.
  • Recommended in applications requiring API SL, JASO MA and JASO MA2 engine oil.

The Kawasaki 4-stroke motorbike engine oil claims improved engine cleanliness and thus longer engine life. When servicing their dirt bikes, dirt riders frequently experience a loss of vitality in their engine oils. Kawasaki engine oil is meant to preserve viscosity while improving engine performance. Its lubricating characteristics help to provide a quieter transmission and smoother gear shifts. Increased transmission/clutch efficiency and consistency for better shift quality. API SL & CF, JASO MA, and JASO MA2 engine oil are all recommended for use in these applications as these are proved to be the best English oil.

Why should you buy this?

It’s a worth buying product as it assures you longer engine life it’s it is used to preserve viscosity and. Promote better engine performance. This is so much to go for within a reasonable price.


  • Excellent wear protection for the engine and bearings. 
  • Improved engine cleanliness and lower oil volatility result in longer engine life. 
  • It improved transmitting performance and reliability for better shift quality.
  • API SL, JASO MA, and JASO MA2 engine oil are all recommended for use in these engines.


The oil became black after the first usage as if it had been burned. This is for low-cc motorcycles.


Because there are so many various types of engine oils on the market, it can be not very clear. You may have also heard that using the wrong engine oil might affect your bike’s performance, so you want to make sure you obtain the right one. Thanks to technological developments, 4-stroke dirt bikes are now much faster than before. If you wish your dirt bike to function well, you’ll need high-quality four-stroke oils. In the dirt bike industry, look for respected brands like Castrol, Maxima, Valvoline, Kawasaki, and Quicksilver.

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