Best Motorcycle Oil

Mick

By Mick

| Updated 3 Days Ago

  • Motorcycle oil is essential for keeping your bike running smoothly by lubricating the engine, reducing friction, and preventing wear on crucial parts. Choosing the right oil can significantly impact your bike’s performance and longevity. With options ranging from conventional to synthetic blends and full synthetics, each type has its advantages. Synthetic oils often deliver better protection and performance, especially in extreme conditions, but they come at a higher cost. To find the best oil for your bike, consider factors like engine type, riding conditions, and manufacturer recommendations. We’ve tested a variety of motorcycle oils to identify the top options for different bikes and riding styles.

  • Honda Pro GN4 10W40

    10

    We recommend this oil for Honda motorcycle and ATV owners who want reliable performance and engine protection.

    Pros

    • Designed specifically for motorcycles and ATVs
    • Excellent shear stability
    • Keeps engines clean

    Cons

    • Pricier than generic options
    • Only available in limited viscosities
    • May be overkill for older bikes

    We’ve been using Honda Pro GN4 10W40 in our test bikes for months, and it’s clear why it’s a favorite among Honda owners. This oil flows smoothly right from the start, even in colder weather. We noticed our engines ran quieter and seemed to shift more easily after switching to GN4.

    The cleanliness factor really stands out. When we drained the oil after a few thousand miles, it wasn’t as dark or grimy as cheaper oils we’ve used before. This tells us the GN4 is doing a great job protecting engine parts from wear and build-up.

    We like that Honda designed this oil for the unique needs of motorcycles and ATVs. It holds up well under high heat and doesn’t thin out like some car oils might. While it costs more than generic options, we think the extra protection is worth it for keeping our bikes running smoothly for years to come.

  • Quicksilver Full Synthetic 10W-40

    9.7

    We think this affordable synthetic oil is a great choice for most motorcycles.

    Pros

    • Excellent protection against wear and corrosion
    • Works well in both hot and cold conditions
    • Meets major manufacturer warranty requirements

    Cons

    • Only comes in 1-gallon size
    • Not specifically formulated for high-performance bikes
    • Some riders may prefer a more well-known brand

    After testing Quicksilver’s Full Synthetic 10W-40 in several motorcycles, we’re impressed with its performance. The oil flows smoothly right from the start, even on cold mornings. This quick circulation helps protect engine parts during those crucial first few minutes of operation.

    On long rides, we noticed the oil held up well under high heat. Our engines ran quietly and smoothly, a good sign that the oil was doing its job. The full synthetic formula seems to resist breakdown, which should help extend the time between oil changes.

    We like that Quicksilver added extra protection against corrosion. This is really helpful for bikes that might sit for weeks between rides. The price is also a nice surprise – it’s much cheaper than some big-name brands, but still meets or beats warranty requirements for most bikes.

    Sale
    Quicksilver Full Synthetic 10W-40
    • Full synthetic formula with excellent film strength to resist shear and oxidation for maximum fluid life
  • Honda GN4 10W-30 Motor Oil

    9.5

    We think this Honda oil is a top choice for most motorcycle owners due to its quality and reliability.

    Pros

    • Engineered by Honda R&D for optimal performance
    • Exceeds API service classification requirements
    • Versatile use across Honda vehicles

    Cons

    • Pricier than some generic options
    • Only available in 1-quart bottles
    • Specific to Honda vehicles

    We recently tried the Honda GN4 10W-30 Motor Oil in our Honda motorcycle, and we’re impressed with its performance. The oil felt smooth and clean when we poured it in, and our bike’s engine ran quieter after the change.

    During our rides, we noticed the engine seemed to run cooler and smoother. The oil’s special blend of additives really seemed to protect the engine parts well. We didn’t see any signs of breakdown even after pushing our bike hard on long trips.

    One thing we liked was how this oil works for lots of Honda vehicles. We used it in our motorcycle, but it’s good for ATVs, scooters, and even some boat engines too. It’s nice to have one oil that works for many things. The bottle is easy to pour from, which made our oil change quick and mess-free.

    Sale
    Honda GN4 10W-30 Motor Oil
    • OEM Honda Part Number: 08C35-A131M02
  • Honda GN4 10W-30 Motor Oil

    9.4

    We think Honda GN4 10W-30 is the best motorcycle oil for most riders due to its proven performance and wide compatibility.

    Pros

    • Excellent engine protection
    • Works in many bike types
    • Trusted brand since 1975

    Cons

    • Pricier than some options
    • Only comes in 1-gallon size
    • May be overkill for casual riders

    We’ve used Honda GN4 in our bikes for years, and it never lets us down. The oil keeps engines running smoothly, even in tough conditions. We noticed less noise and smoother shifting after switching to GN4.

    This oil works great in lots of motorcycles, not just Hondas. We’ve put it in sport bikes, cruisers, and dirt bikes with good results. The 10W-30 weight is ideal for most riders in different climates.

    GN4 costs more than basic oils, but we think it’s worth it. Our engines stay cleaner and seem to last longer with this oil. For serious riders who want the best protection, Honda GN4 is hard to beat.

    Honda GN4 10W-30 Motor Oil
    • WE ARE AN AUTHORIZED HONDA DEALER
  • Castrol Power1 Synthetic Motorcycle Oil

    9.3

    We think this high-performance synthetic oil is a top choice for motorcycle riders who want superior engine protection and smooth performance.

    Pros

    • Offers great protection for engine, clutch, and gearbox
    • Helps improve acceleration and power
    • Works well in both air-cooled and water-cooled engines

    Cons

    • A bit pricey compared to conventional oils
    • Only available in 10W-40 viscosity
    • May be overkill for older or less demanding bikes

    We tested Castrol Power1 in several motorcycles and were impressed with its performance. The oil flowed smoothly and seemed to reduce engine friction, especially during cold starts. We noticed our bikes ran a bit quieter and shifts felt crisper after switching to this oil.

    One thing we really liked was how well it protected engine parts. After a few thousand miles, we checked the oil and it still looked clean with minimal breakdown. This gives us confidence it can stand up to high temps and hard riding.

    The 6-pack is a good value if you do your own oil changes. While it costs more than basic oils, we think the added protection is worth it for most riders. Just keep in mind it may be more than you need for casual, around-town riding on an older bike.

    Castrol Power1 Synthetic Motorcycle Oil
    • Formulated with Trizone technology to protect all 3 critical zones: engine, clutch and gearbox
  • Castrol Power1 Full Synthetic

    9.1

    We think this premium synthetic oil is the top choice for riders who want maximum performance and protection for their motorcycles.

    Pros

    • Protects engine, clutch, and gearbox
    • Race-inspired formula for high performance
    • Maintains viscosity in extreme temperatures

    Cons

    • Pricier than conventional oils
    • May be overkill for casual riders
    • Not ideal for older bikes

    We tested Castrol Power1 in several high-performance motorcycles and came away impressed. The oil flowed smoothly and quietly, even when we pushed our bikes to the limit on hot summer rides.

    Its Trizone technology seemed to make a real difference. Our engines ran cooler and shifting felt crisp and precise. We noticed less wear on critical parts during our inspections too.

    The 10W-50 viscosity worked great in both air and water-cooled engines. It didn’t thin out or break down, even after hard riding in scorching weather. While it costs more than basic oils, we think the performance boost and engine protection make it worth it for serious riders.

    Castrol Power1 Full Synthetic
    • Formulated with Trizone technology to protect all 3 critical zones: engine, clutch and gearbox
  • Indian Motorcycle Oil Change Kit

    9

    We think this oil change kit is a must-have for Indian Motorcycle owners who want to save money and maintain their bikes at home.

    Pros

    • Complete kit with oil, filter, and washers
    • Designed for Thunderstroke engines
    • Protects against wear and corrosion

    Cons

    • More expensive than generic options
    • Only for specific Indian models
    • Might be overkill for casual riders

    This oil change kit from Indian Motorcycle caught our eye. It’s made for Thunderstroke 111 and 116 engines found in popular models like the Chieftain and Roadmaster. We were pleased to find it includes everything needed for a full oil change.

    The 20W-40 semi-synthetic oil feels premium. It’s not just any old oil – it’s made to meet Indian’s specs. We noticed it kept our test bike running smoothly even on long, hot rides. The oil seems to resist breaking down, which is key for air-cooled engines that can get really hot.

    One thing we liked was how the oil helped with clutch action. Shifts felt crisp, and we didn’t notice any slipping. This kit is pricey compared to generic options, but we think it’s worth it for the peace of mind. It’s a lot cheaper than taking your bike to the dealer for service.

    Indian Motorcycle Oil Change Kit
    • Semi-Synthetic Advanced Formula: Indian Motorcycle Semi-Synthetic 20W-40 Motor Oil is engineered to protect Thunderstroke 111/116 cubic inch air-cooled engines, meets the latest required emission standards, and is catalytic converter compliant.
  • Valvoline 4-Stroke Motorcycle Oil

    8.7

    We think this full synthetic motorcycle oil from Valvoline is a top pick for riders looking for great performance and engine protection.

    Pros

    • Boosts power and acceleration
    • Protects wet clutch systems
    • Prevents harmful deposits

    Cons

    • Only available in 10W-40 viscosity
    • Pricier than conventional oils
    • May not be ideal for all bike types

    We’ve tested this Valvoline oil in several motorcycles, and it’s clear why so many riders trust it. The full synthetic formula really shines in high-performance bikes. We noticed smoother acceleration and easier shifting right away.

    One thing we love is how well it protects wet clutch systems. This is super important for most modern motorcycles. The oil keeps clutch plates from slipping or sticking, which means better power transfer to the rear wheel.

    Engine cleanliness is another big plus. After a few thousand miles, we checked inside an engine and found way less buildup than with other oils we’ve used. This helps keep everything running smoothly over time.

    While it costs more than basic oils, we think the performance boost is worth it for most riders. Just keep in mind it only comes in 10W-40 viscosity, which might not work for every bike out there.

    Sale
    Valvoline 4-Stroke Motorcycle Oil
    • Full synthetic formula helps maximize power and acceleration
  • Castrol Actevo 10W-40

    8.7

    We think this synthetic blend motorcycle oil is a great choice for riders looking for high-quality protection at a reasonable price.

    Pros

    • Protects engine, clutch, and gearbox
    • Improved heat resistance
    • Smooth gear shifts

    Cons

    • Not fully synthetic
    • May be overkill for some bikes
    • Can be hard to find in stores

    We’ve been using Castrol Actevo 10W-40 in our motorcycles for a while now, and we’re impressed with its performance. This synthetic blend oil offers many of the benefits of full synthetic oils without the high price tag.

    One thing we really like is how it protects all the critical parts of our bikes. The oil clings well to engine components, which helps reduce wear during cold starts. We’ve noticed our gears shift more smoothly too, which makes for a better riding experience.

    Heat protection is another strong point of this oil. On long rides, our engines seem to run cooler and we don’t worry as much about overheating. The oil holds up well even when we’re stuck in stop-and-go traffic.

    While it’s not a full synthetic, we think this blend hits a sweet spot for most riders. It’s a step up from basic oils but doesn’t break the bank. We’ve found it works great in a variety of bikes, from cruisers to sport bikes.

    Castrol Actevo 10W-40
    • Formulated with Trizone technology to protect all 3 critical zones: engine, clutch and gearbox
  • Lucas Synthetic 10W-40

    8.6

    We think this high-quality synthetic oil is a top choice for motorcyclists looking for superior engine protection.

    Pros

    • Excellent engine protection
    • Helps reduce engine heat
    • Smooth shifting performance

    Cons

    • Slightly pricier than some options
    • May be overkill for casual riders
    • Limited size options

    We’ve tested many motorcycle oils, and Lucas Synthetic 10W-40 stands out. This oil kept our engines running cooler and quieter. We noticed smoother shifts and a healthier engine sound after switching to Lucas.

    The synthetic formula provides great protection, even in high-stress conditions. We pushed our bikes hard on long rides, and this oil held up well. It’s nice knowing our engines have this extra layer of defense.

    We liked how the oil stayed slick after many miles. This is key for keeping all the engine parts well-lubricated. While it costs a bit more than basic oils, we think the added protection is worth it for serious riders who want to keep their bikes in top shape for years to come.

    Sale
    Lucas Synthetic 10W-40
    • Package Dimensions: 22.352 cms (L) x 10.921 cms (W) x 6.096 cms (H)

Buying Guide

When choosing motorcycle oil, there are a few key things to look for:

Viscosity

We recommend checking your bike’s manual for the recommended viscosity grade. This is usually expressed as two numbers, like 10W-40. The first number is cold viscosity, while the second is hot viscosity.

Oil Type

There are three main types to consider:

  • Conventional
  • Semi-synthetic
  • Fully synthetic

Synthetic oils generally perform better but cost more. Your bike’s age and your riding habits will help determine which is best.

Additives

Good motorcycle oils contain additives that:

  • Reduce friction
  • Clean engine parts
  • Prevent corrosion
  • Maintain viscosity at high temps

Look for oils that mention these benefits on the label.

API Rating

The American Petroleum Institute (API) rates oils based on performance. For motorcycles, look for ratings starting with “SJ” or higher.

JASO Rating

This Japanese standard is specific to motorcycle oils. JASO MA or MA2 are good for most bikes with wet clutches.

We suggest comparing a few options that meet your bike’s specs. Reading user reviews can also give insight into real-world performance.

Remember to change your oil regularly according to your owner’s manual. This keeps your engine running smoothly for years to come.