Engine Oil
Proper motorcycle engine oil is essential for your motorcycle’s performance and engine life. It lubricates your bike’s moving parts, cools the engine, cleans debris, and prevents wear. However, using the wrong oil can damage the engine, reduce fuel economy, or cause other expensive repairs in the future if the oil does not work correctly in the long run.
This review will explore some of the top engine oils for motorcycles currently on the market. Across the spectrum of riders, the number of oil options can be daunting, whether you are a new rider or a veteran.
This guide will help you cut through the jargon of varying oils, be they mineral oils or fully synthetic formulas, and choose the correct oil based on the specific requirements of your motorcycle and performance traits and the way you ride.
If you read the entire article, you will know what features are needed for the best engine oil. Based on that knowledge, you can decide on the best motorcycle engine oil for your engine.
What to Look for in the Best Engine Oil for Motorcycles
The right engine oil for your motorcycle is essential because it helps your bike perform better, increases your engine life, and gives you a smooth ride. Now, there are some keys to picking the proper engine oil. Here’s what to look for:
Viscosity
The thickness or fluidity of the oil is called viscosity; at this point, the oil can perform differently at different temperatures. Viscosity ratings are the first step to understanding oil for motorcycle engines, as they operate under entirely different conditions than car engines.
• Effect on performance: The suitable viscosity ensures the oil flows correctly and lubricates the engine thoroughly, even at high temperatures. This helps to avoid internal engine wear and tear, ensuring that the engine runs efficiently to its maximum capacity.
• Viscosity ratings: Oils generally have two numbers (10W-40). The first number (before the W) shows how the oil performs in colder temperatures (Winter), while the second number shows how it is at high temperatures. The more significant second number indicates thicker oil, which provides superior protection in hot conditions.
•Choosing the proper viscosity: Always follow the motorcycle owner’s manual to determine which viscosity best suits the climate and the kind of riding you do. In cooler weather, 5W-30 may well be the best option; however, in hotter climates, a twenty-W-50 may be a great option.
Oil Type (Mineral, Semi-Synth, Fully Synth)
Motorcycle engine oils can be divided into three base families: mineral, semi-synthetic, and fully synthetic. Each has its benefits and is more applicable to specific riders and types of bikes.
• Mineral oil: The simplest oil source is purified crude oil. This is usually the cheapest option and is used for lower-performance engines, such as smaller motorcycles. But you might have to change this a little more.
• Semi-synthetic oil: A mixture of mineral and synthetic oil, semi-synthetic is a happy medium between performance and price. Its superior protection makes it a good match for medium-performing bikes.
• Synthetic oil: This is artificially designed oil that provides better performance and protection. It also improves stability, higher temperature durability, and longer oil change intervals, which makes it perfect for high-performance motorcycles.
Additives and Technology
There is more to engine oil than just lubricating properties. It has several additives, too, which improve its performance and protect the engine.
• Detergents: Prevent sludge and dirt build-up, keeping the engine smooth.
Anti-wear agents: Additives (like zinc dialkyl dithiophosphate (ZDDP)) form a protective layer on parts to reduce wear and resistance (in high-stress parts, including valves and pistons)
• Viscosity modifiers: These additives assist in maintaining the oil thickness, which helps during the aging of oil and in extreme conditions.
• Friction modifiers decrease the friction between moving parts, thus enhancing your engine performance and fuel economy.
API and JASO Ratings
However, keep in mind that not all engine oils are made equal, so when you choose, you have to ensure that these oils meet the following specifications.
API Rating: The American Petroleum Institute (API) rating tells how well the oil performs and its quality. Check the labels to ascertain an API rating of SG, SH, or higher to ensure adequate safeguards.
• JASO Rating: JASO is a vital rating, especially for motorcycles. It reflects how oil performs under certain conditions in a motorcycle engine. The most frequently recommended grades for wet clutch motorcycles that use conventional lubricants are JASO MA or JASO MA2 (the supplemental MA2 is designated for newer lubricants developed since 2000).
Top 10 Best Engine Oils for All Motorcycles
This section will underline the best US/ worldwide motorcycle engine oils for various motorcycle types, such as cruisers, sportbikes, and off-road motorcycles. For each product review, there should be a summary of its features, pros, cons, and ideal circumstances under which the product can be used.
1. Mobil 1 Racing 4T 10W-40 Synthetic Motor Oil
• Summary: Mobil 1 Racing 4T is a fully synthetic oil suited for various 4-stroke motorcycles (see SI). It’s especially loved by sportbike owners who like to put their engines in the red.
• Key Features:
- Superior Performance fully synthetic formula
- Exceptional viscosity stability at high and low temperatures.
- Superior protection against wear, even in the most extreme conditions
• Pros:
- High-temperature stability is outstanding.
- Reduces oil consumption.
It is Ideal for the engines that rev to a higher limit.
• Cons:
- Costs a little bit more than other oils.
• Best For: High-horsepower sportbikes, like Yamaha R1, Kawasaki Ninja, and Suzuki GSX-R
2. Castrol POWER 1 4T 10W-40 synthetic motorcycle oil
• Overview: Castrol POWER 1 4T is designed to provide superior protection and acceleration power for performance motorcycles. It’s what that oil is famous for, keeping engines juicy at higher speeds.
• Key Features:
- Exceptional acceleration improving synthetic oil.
- Protection from engine wear and deposits
- Assists in power and keeping your bike in service
• Pros:
- Great for motorcycles used in aggressive riding conditions
- It helps the engine function smoothly.
- Good value for the price.
• Cons:
- Not ideal for older bikes or high-mileage bikes
• Best Suited For: Sportbikes and street bikes.
3. Royal Purple 10W-40 High-Performance Motorcycle Oil
• Brief Summary: Royal Purple 10W-40 is fully synthetic and offers increased performance and protection. This is a winning combination for U.S. riders looking for reliability and performance.
• Key Features:
- Blended synthetic offers the best performance and protection
- An excellent option for motorcycles with higher mileage as it minimizes engine drag.
- Enhances both horsepower and torque.
• Pros:
- Excellent for improving engine efficiency.
- Suitable for both highways and off-road riding.
• Cons:
- Slightly more expensive than some competing oils.
• Best Suited For: Touring motorcycles and cruisers like those offered by Harley-Davidson and Indian motorcycles.
4. Amsoil Synthetic 10W-40 Premium Motorcycle Oil
Summary: Amsoil is widely regarded for its high-quality synthetic oils. Designed to deliver excellence in the field, this product will withstand even the most demanding conditions.
• Key Features:
- Artificial formulating decreases abrasion and avoids rust.
- Great for hot temperatures ─ Ideal in warm U.S. states
- Provides better fuel efficiency
• Pros:
- Superior heat protection.
- Increased engine life with less wear
• Cons:
- At the higher end of the price range.
Ideal for: Cruisers, touring bikes and sportbikes
5. Shell Rotella T6 5W-40 Full Synthetic Motorcycle Oil
• Details: Shell Rotella T6 is a generic oil used in diesel engines and motorcycles. This is particularly true for American motorcycle riders since this product offers additional protection for extreme weather conditions.
• Key Features:
- Excellent complete synthetic formula for use in motorcycles and diesel cars.
- Excellent wear protection and extended drain intervals
- Enhanced fuel economy.
• Pros:
- Perfect for the long-haul road warrior needing a long-lasting oil
- Consistent functionality in high-temperature environments
• Cons:
- It is not ideal for high sportbike engines.
• Best For: Touring bikes, dual-sport, and long-distance riders
6. Motul 300V 10W-40 Synthetic Motorcycle Oil
• Summary: Motul 300V is a synthetic lubricant formulated for high-performance motorcycle engines. This is especially popular in motorsports and is ideal for American riders who aim to customize their machine for top performance.
• Key Features:
- Use of Ester technology for excellent engine protection.
- Minimizes friction and guards against engine sludge.
- Race/Dedicated for track days and spirited riding
• Pros:
- Great for high-performance applications
- A great deal of production protection.
• Cons:
- More expensive since it is for racing purposes
• Best Suited For: Race bikes And fast sportbikes.
7. Bel-Ray EXS Full Synthetic Ester 10W-40
• Details: Bel-Ray EXS Synthetic Engine Oil is a quality synthetic oil blend for high-performance and off-road motorcycle engines. Ideal for plenty of U.S. riders doing off-road adventures in various temperatures.
• Key Features:
- Ester-based tech for best durability and protection.
- Specially designed for off-road and dual-sport motorcycles.
- Shear stability properties for challenging conditions
• Pros:
- Long-lasting protection.
- Useful for rough terrain and harsh conditions.
• Cons:
- Not commonly found in most retail outlets
• Best for: Off-road riders, adventure bikes
8. Pennzoil Platinum 10W-40 Full Synthetic Motorcycle Oil
• Overview: Pennzoil Platinum is an industry leader in oils, and this 10W-40 full synthetic motorcycle oil is focused on performance and engine protection.
• Key Features:
- Full synthetic oil designed to minimize wear and maximize engine life
- Containing inhibitors to improve Oxidation stability
- Prevention of deposits by cleaning engines.
• Pros:
- Best value for the money with high-quality oil.
- Extended Engine Life.
• Cons:
- It’s not among the best choices for all-out racing conditions.
• Best Suited For: Any street bike—including sportbikes or cruisers
9. Honda Pro GN4 10W-40 Motor oil
• Type: Honda Pro GN4 is engineered for Honda motorcycles but also works well on other brands. It is popular for its low price and dependable performance.
• Key Features:
- Designed for Honda but may fit other bike brands.
- It reduces wear and helps protect the engine well.
- Reduces oil consumption.
• Pros:
- Affordable and reliable.
- Perfect for the daily commute and general maintenance.
• Cons:
- Not the best for high-power motors!
• Best suited for: Honda bikes & every day riders
10. Lucas Oil 10W-40 Semi-Synthetic Motorcycle Oil
• Overview: Lucas Oil is also a family-trusted name in the motorcycle oil class. Click here for a 10W-40 semi-synthetic that offers the best of both worlds.
• Key Features:
- The semi-syn blend does OK in terms of protection and overall performance.
- It reduces wear and tear and increases the comfort of the ride.
- Works well for many different types of motorcycle
• Pros:
- Budget-friendly.
- Works with all types of motorbikes.
• Cons:
- Not as high-performing as the fully synthetic options.
Target Audience: Riders on a budget and anyone who needs to commute to work.
My personal Top Motorcycle Engine Oil Picks for Optimal Performance
As a motorcycle enthusiast, I have used many engine oils. When it comes to performance, protection, and longevity, there are four brands I repeatedly return to: Motul 300V, Shell Rotella T6, Mobil 1 Racing 4T, and Amsoil Synthetic.
All these oils have their strengths; one could be just the right solution for your bike needs. Here’s a rundown of what I’ve experienced with all of them:
Motul 300V
High-performance oil, if you’re looking for it, is the Motul 300V, and I swear by this stuff when it comes to track and street bikes. Fully synthetic oil provides excellent acceleration and power and keeps the engine running smoothly at high RPMs.
Since using this, I’ve noticed a significant improvement in my bike’s responsiveness and increased engine tone. Also, it has excellent protection against wearage, as it’s important for long tours or heavy riding. It’s a little expensive, but that performance boost can justify the cost for serious bikers.
Shell Rotella T6
Shell Rotella T6 is an ideal choice for those who strive for performance and protection while on a budget. This synthetic oil can perform well on various bikes, from cruisers to sports bikes. I’ve found it especially helpful in keeping the engine in my bike clean and keeping the oil from breaking down and lasting longer.
For regular commuters who value quality at a low price point, it’s a great option. I’m pretty sure the low ash content also helps keep the engine parts clean, which is a big plus for me.
Mobil 1 Racing 4T
For those high-performance rides, I swear by Mobil 1 Racing 4T. It is ideal for aggressive riders or riders who want to ride their bike to the limit. Whether at the racetrack or the street, taking a spirited ride, this oil holds up under extreme heat and stress. It prevents the engine from overheating during the roughest conditions and keeps it smooth.
Since I switched to this, I observed less engine wear and more responsive throttle, so it’s undoubtedly a thumbs-up in my book. It’s also readily available, making it easily accessible to most riders.
Amsoil Synthetic
For long-term protection and longevity, I use Amsoil Synthetic. I have used this oil for a few years, and it always yields consistent results. It should be noted that the oil flows smoothly regarding lubrication, leading to excellent lubrication and minimal engine wear.
This is perfect for the bikes that get ridden regularly on long-distance rides or for those that prefer to change their oil less often. With Amsoil’s extended drain intervals, I won’t worry about changing the oil often.
If you’re looking for an oil you can rely on that won’t fail you even over the long run, this one’s worth a second look.
Final Thoughts:
Choosing engine oil depends on your riding style and your bike’s requirements. However, I prefer Motul 300V motorcycles for those seeking the best performance.
If you need something to perform well but be a little more pocket-book-friendly, then Shell Rotella T6 comes in at a great price. If you like to beat up on your bike or hit track days, Mobil 1 Racing 4T is a respectable option. Amsoil Synthetic is the best choice if you’re looking for long-term reliability and reduced maintenance.
Any oil you choose will work, but make sure it is good for your bike and riding style. The oil you choose can significantly impact your engine’s performance and longevity!
How to Choose the Right Engine Oil for Your Motorcycle
How engine oil affects motorcycle performance Choosing the right engine oil is essential for your motorcycle’s performance and lifespan. Here are some important parameters to keep in mind while selecting the right engine oil for your bike.
Type of Motorcycle (Sport, Cruiser, Dirt Bike, etc.)
Each motorcycle has a different engine requirement. For example, sports bikes need specific oils that hold up in high RPMs and high temperatures; thus, synthetic oils are typically the ideal choice.
Cruisers and touring bikes may not require such high-performance oils, and semi-synthetic or even mineral oils could be adequate. Dirt bikes often drive through dirt, moisture, and mud, requiring oils that suit such conditions.
Climate Conditions
Your riding climate determines the viscosity you should choose. In hot climates, you may need to use a higher-viscosity oil (such as 20W-50) to protect the engine from overheating.
In colder climates, oil with a low viscosity rating (10W-30) is necessary during cold starts to ensure oil circulation.
Riding Frequency
Driving daily may require a more potent oil with a more significant gap between changes. But if you are a sporadic rider, oil that doesn’t break down quickly and is made for lower-mileage use might be a better choice. Synthetic oils generally perform better over longer distances and under challenging conditions.
Oil Change Intervals
Certain kinds of oil are intended to last longer between oil changes, making them useful for bike riders on a daily basis1.
If you wish for fewer maintenance motorcycles, look for relatively long drain interval oils. On the other hand, if you use your bike to do a lot of stop-and-go in-town traffic, you may have to change the oil more often.
Manufacturer Recommendations
Always consult your motorcycle’s owner’s manual for manufacturer recommendations. They frequently recommend the types and viscosities of oil and how often to change the oil to keep the bike performing optimally. These guidelines ensure engine warrant coverage while prolonging its operational life.
Considering these factors can help you select the best motorcycle engine oil for your bike, keeping it running smoothly and your investment safe for a long time.
How to Change Motorcycle Engine Oil
Changing the engine oil of your motorcycle is an essential aspect of maintenance activity. Just do it the right way, and then here are a few simple steps to count on:
Step 1: Acquire the Required Tools and Materials
Check your prerequisites before you start:
- A correct engine oil (consult your owner’s manual for the appropriate type and viscosity)
- An oil drain pan
- A wrench or socket set
- A funnel
- Replacement of oil filter (if necessary)
- Rags for cleaning
- A pair of gloves (optional)
Step 2: Warm Up the Engine
You should also run the engine for about 15 minutes to allow the oil to heat up. Warm oil is viscous; it moves more to do the trick and will drive.
As such, it flows undetectable from sludge and other debris. So, after running it, let the bike cool a bit; you don’t want to get burned.
Step 3: Find the Oil Drain Plug
Park the motorcycle on even, solid ground. The oil drain plug is located underneath the engine , usually towards the bottom of the engine case. Position your oil catch pan under the plug.
Step 4: Drain the Old Oil
Carefully loosen and unscrew the oil drain plug using your wrench. Let the oil completely drip to the bottom. Take a moment; this can take a few minutes.
Step 5: Change the Oil Filter (If Needed)
Remove the worn oil filter with an oil filter wrench if your bike needs a new one. With the new filter, use a little new oil to lubricate the rubber seal and screw it in place. Take care not to go too tight!
Step 6: Refill with Fresh Oil
When the old oil is entirely drained, tightly replace the drain plug. Using the funnel, pour the new oil into the motor. You can also check your motorcycle’s owner’s manual for the appropriate amount.
Step 7: Check Oil Level
Run the engine for a minute, then shut it down. After a minute, dip the dipstick in and check the level. Add additional oil if necessary to bring it to the optimum level.
Step 8: Clean Up
Take the old oil and go to a recycling place to remove it. Wipe up any spills and clean your tools.
These will ensure the internal workings of the engine run properly and are densely packed with the lubricant needed for longevity.
Common Mistakes When Choosing Engine Oil
Some common mistakes seen while selecting engine oil for motorcycles can severely affect your bike and engine health.
Steering clear of these mistakes is essential for adequately working your bike and ensuring it takes you quickly from one point to another. Well, here are some of the most common and some of the things to avoid:
Using car engine oil on motorcycles
Many riders use car engine oil for their motorbike, thinking all engine oils are the same. The problem is that car oils generally are not formulated for motorcycle specifications.
Unlike cars, which have separate systems for lubricating both the engine and the transmission, a motorcycle uses a standard lubrication system for both the engine and the clutch, which means that any oil that is added at the crankcase may also get exposed to the clutch and potentially cause slippage unless the oil is specifically formulated for use in a wet clutch environment.
Note: Always use motorcycle-specific oils to ensure optimal performance and protection.
Choosing the Wrong Viscosity
Affect the flow and the lubrication of your motorcycle oil—wrong viscosity rating means wrong oil flow and lubrication to the engine (source: motorcycle.com) at specific temperatures. If the oil is too thick, there will be too much resistance; if it is too thin, proper protection will not be available. Stick with what the manual recommends for your engine type and your riding climate.
Tip: Reference your bike manual for recommended viscosity by climate (hot or cold, etc.),
Ignoring the JASO Rating
The JASO rating is critical to know if the oil is suitable for motorcycle use from the point of view of the wet clutch. Some car oils may not have this rating and, if used, can affect the performance of your clutch or even damage it.
Tip: Always check for the JASO MA or MA2 rating on the oil container before application as motorcycle-specific oil.
Exceeding Fill Engine with Oil
Spilling excessive oil into the engine — in which case, the system will be over-pressurized, which may cause oil to foam or aerate. This can make the oil less efficient and lead to improper lubrication and damage to the engine.
Note: Never check the oil level when the engine is hot, with the dipstick, or when the oil sight glass is hot, as this can lead to incorrect readings.
Not Changing Oil Regularly
Not having oil changes too often will lead to sludge and dirt magnetic sticks, which will affect the car’s performance and life. Contaminated oil cannot lubricate adequately and causes accelerated engine damage.
Tip: Provider oil change intervals and regular inspection of the oil condition as the manufacturer recommends.
Knowledge of these most common mistakes when selecting engine oil can help you decide on a better oil type for your motorcycle, allowing it to run at its peak and protect it from unnecessary damage.
Conclusion
Finally, choosing the right motorcycle engine oil is the key to making your motorcycle work effectively. Whether you go for synthetic, semi-synthetic, or mineral oil, all have advantages depending on your riding style, climate, and bike type.
The oils we reviewed in this post give you various choices so you can find the one that fits your motorcycle best. Remember that frequent oil changes and good upkeep will ensure your engine lasts longer, resulting in a smoother and more pleasant journey. So, pick the proper engine oil and let your motorcycle run in its best form.
