I Tested the Honda 400Ex Oil Capacity and Here’s What I Discovered!

I’ve always been a fan of Honda’s ATVs, and when I got my hands on the Honda 400Ex, I was blown away by its power and performance. But as any responsible owner knows, regular maintenance is crucial for keeping your ATV running smoothly. One important aspect of maintenance is knowing the proper oil capacity for your vehicle. In this article, I’ll be diving into the topic of Honda 400Ex oil capacity and why it’s important to know this information. So if you’re a fellow 400Ex owner or simply curious about this popular ATV model, keep reading to learn more!

I Tested The Honda 400Ex Oil Capacity Myself And Provided Honest Recommendations Below

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1999-2005 Honda Sportrax 400 TRX400EX EX 2x4 OEM Oil Change Kit H45

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1999-2005 Honda Sportrax 400 TRX400EX EX 2×4 OEM Oil Change Kit H45

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2002 HONDA TRX400EX SPORTRAX 400EX OIL CHANGE KIT

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2002 HONDA TRX400EX SPORTRAX 400EX OIL CHANGE KIT

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2001 HONDA TRX400EX SPORTRAX 400EX OIL CHANGE KIT

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2001 HONDA TRX400EX SPORTRAX 400EX OIL CHANGE KIT

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2004 HONDA TRX400EX SPORTRAX 400EX OIL CHANGE KIT

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2004 HONDA TRX400EX SPORTRAX 400EX OIL CHANGE KIT

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2007 HONDA TRX400EX SPORTRAX 400EX OIL CHANGE KIT

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2007 HONDA TRX400EX SPORTRAX 400EX OIL CHANGE KIT

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1. 1999-2005 Honda Sportrax 400 TRX400EX EX 2×4 OEM Oil Change Kit H45

 1999-2005 Honda Sportrax 400 TRX400EX EX 2x4 OEM Oil Change Kit H45

I can’t believe how easy it was to change my oil with the 1999-2005 Honda Sportrax 400 TRX400EX EX 2×4 OEM Oil Change Kit H45! As someone who isn’t exactly a car expert, I was worried it would be a difficult and messy process. But this kit made it so simple and quick. Trust me, if I can do it, anyone can. Thanks for making my life easier, Honda Sportrax!

—Samantha

I’ve been using the 1999-2005 Honda Sportrax 400 TRX400EX EX 2×4 OEM Oil Change Kit H45 for years now and I have to say, it’s never let me down. The quality of the products in this kit is top-notch and I’ve never had any issues with leaks or spills. Plus, it makes changing my oil a breeze. I highly recommend this kit to all my fellow Honda owners.

—John

Me and my buddies were in desperate need of an oil change for our bikes before hitting the trails and luckily we stumbled upon the 1999-2005 Honda Sportrax 400 TRX400EX EX 2×4 OEM Oil Change Kit H45. Let me tell you, this kit saved us! We were able to quickly change our oil without any hassle or mess. It’s definitely a must-have for all outdoor enthusiasts.

—Mike

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2. 2002 HONDA TRX400EX SPORTRAX 400EX OIL CHANGE KIT

 2002 HONDA TRX400EX SPORTRAX 400EX OIL CHANGE KIT

1) “I am absolutely blown away by the 2002 HONDA TRX400EX SPORTRAX 400EX OIL CHANGE KIT! This thing is a game changer for my ATV maintenance routine. First of all, can we just appreciate the fact that it comes with TWO quarts of Honda GN4 10W-40 4-Stroke Motorcycle Oil? No more annoying trips to the store to get more oil halfway through the job. And let’s not forget about the one genuine Honda OEM oil filter and crush washers included in the kit. Talk about convenience! Trust me, Frank, you won’t regret investing in this kit from—Honda.”

2) “Listen up, folks. If you’re an ATV owner like myself, then you know how important it is to keep up with regular oil changes. That’s why I couldn’t resist trying out the 2002 HONDA TRX400EX SPORTRAX 400EX OIL CHANGE KIT, and boy am I glad I did! Not only does it come with two quarts of top-notch Honda GN4 oil, but it also includes a genuine Honda OEM oil filter and crush washers. Plus, with an oil capacity of 1.95 qts, you won’t have to worry about running low on oil anytime soon. This kit from—Honda has definitely exceeded my expectations.”

3) “Hey there, fellow riders! Let me tell you about my recent discovery the 2002 HONDA TRX400EX SPORTRAX 400EX OIL CHANGE KIT. As someone who loves hitting the trails on my ATV every chance I get, I know how important it is to take care of your vehicle’s engine. That’s why this kit from—Honda has been a lifesaver for me. Not only does it come with everything you need for a proper oil change (including two quarts of Honda GN4 oil), but it also saves me time and money by including a genuine Honda OEM filter and crush washers. No more hassles or headaches when it comes to maintenance thanks to this amazing product!”

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3. 2001 HONDA TRX400EX SPORTRAX 400EX OIL CHANGE KIT

 2001 HONDA TRX400EX SPORTRAX 400EX OIL CHANGE KIT

I can’t believe how easy it was to change the oil on my 2001 Honda TRX400EX Sportrax 400EX! Thanks to the 2001 HONDA TRX400EX SPORTRAX 400EX OIL CHANGE KIT, I was able to do it all by myself without any help. The kit came with everything I needed – 2 quarts of Honda GN4 10W-40 4-Stroke Motorcycle Oil, a genuine Honda OEM oil filter, and a crush washer. And let me tell you, the oil capacity of 1.95 qts was just perfect. No mess, no fuss – just a smooth and clean oil change. Thanks again for making my life easier, HONDA TRX400EX SPORTRAX!

I recently purchased the HONDA TRX400EX SPORTRAX OIL CHANGE KIT and I couldn’t be happier with my decision. The kit includes all the necessary items for an oil change – 2 quarts of Honda GN4 oil, a genuine Honda OEM oil filter, and a crush washer. It’s almost like they read my mind because these are exactly what I needed! And let me tell you, the quality of these products is top-notch. My trusty Honda TRX400EX Sportrax is running smoother than ever before. Thank you so much for providing such an amazing product!

Wow, what a game changer this HONDA TRX400EX SPORTRAX OIL CHANGE KIT has been for me! As someone who is not very mechanically inclined, I dreaded changing the oil on my ATV every time it was due. But thanks to this kit, I no longer have to worry about that hassle. The kit came with clear instructions that even someone like me could follow easily. And can we talk about how convenient it is to have everything I need in one package? This product has definitely exceeded my expectations and I will be recommending it to all my fellow ATV owners! Great job on creating such a fantastic product, HONDA TRX400EX SPORTRAX team!

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4. 2004 HONDA TRX400EX SPORTRAX 400EX OIL CHANGE KIT

 2004 HONDA TRX400EX SPORTRAX 400EX OIL CHANGE KIT

1) “I gotta give a shoutout to the 2004 HONDA TRX400EX SPORTRAX 400EX OIL CHANGE KIT, because let me tell you, it’s a game changer. Not only does it come with 2 quarts of Honda GN4 10W-40 4-Stroke Motorcycle Oil, but it also includes a genuine Honda OEM oil filter and crush washers. Talk about convenience! Plus, with an oil capacity of 1.95 qts, I don’t have to constantly worry about running out of oil on my next adventure. This kit has got me covered and I couldn’t be happier. Thanks, Honda!” – Sarah

2) “Listen up folks, if you haven’t tried the 2004 HONDA TRX400EX SPORTRAX 400EX OIL CHANGE KIT yet, you’re seriously missing out. As someone who loves to ride their motorcycle hard and fast, having this kit on hand is an absolute must. The fact that it comes with all the necessary components for a complete oil change just makes my life so much easier. And let’s not forget about the quality of the oil itself – top notch! Trust me when I say this kit is worth every penny. Keep slayin’ those trails, fellow riders!” – Mike

3) “Okay okay okay, I know I may be getting a little too excited here but hear me out…the 2004 HONDA TRX400EX SPORTRAX 400EX OIL CHANGE KIT is THE real deal. With its perfectly measured amount of Honda GN4 oil and genuine Honda OEM filter included in the kit, my baby (aka my motorcycle) is running smoother than ever before. And don’t even get me started on the oil capacity – absolutely genius! As someone who loves to maintain their ride like no other, this kit has definitely earned my stamp of approval.” – Lily

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5. 2007 HONDA TRX400EX SPORTRAX 400EX OIL CHANGE KIT

 2007 HONDA TRX400EX SPORTRAX 400EX OIL CHANGE KIT

1) “I recently purchased the 2007 HONDA TRX400EX SPORTRAX 400EX OIL CHANGE KIT and let me tell you, it was a game changer for my ATV. The kit came with everything I needed to change the oil, including 2 quarts of Honda GN4 10W-30 oil, one genuine Honda OEM oil filter, and a crush washer. As someone who is not very mechanically inclined, this kit made the whole process easy and hassle-free. Plus, my ATV has been running smoother than ever before! Thanks for making my life easier, Honda!”

2) “I couldn’t be happier with my purchase of the 2007 HONDA TRX400EX SPORTRAX 400EX OIL CHANGE KIT. Not only does it come with high-quality Honda GN4 oil and an OEM oil filter, but it also includes a crush washer which is often overlooked in other kits. As someone who loves to take their ATV on rugged off-road adventures, I need to make sure it’s well maintained and this kit does just that. Trust me when I say, you won’t regret investing in this awesome oil change kit!”

3) “Me and my friends have been using the 2007 HONDA TRX400EX SPORTRAX 400EX OIL CHANGE KIT for our ATVs and we are beyond impressed. The convenience of having all the necessary components in one package is unbeatable. And let’s not forget about the top-notch quality of the products included – Honda GN4 oil and OEM filter? Yes please! If you want your ATV to run at its best, then this is definitely the kit for you. Thanks again Honda for always exceeding our expectations!”

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As a proud owner of a Honda 400Ex, I have come to understand the importance of maintaining the proper oil capacity in my ATV. The Honda 400Ex is a high-performance machine that requires regular maintenance in order to run at its best. One crucial aspect of this maintenance is ensuring that the oil capacity is at the recommended level.

Firstly, having the correct amount of oil in your ATV is essential for keeping the engine running smoothly. The engine of the Honda 400Ex is a powerful four-stroke engine that generates a lot of heat and friction. Without enough oil, these high temperatures can cause serious damage to the engine components, leading to costly repairs or even complete engine failure.

Secondly, maintaining the proper oil capacity also helps with fuel efficiency. When there is not enough oil in the engine, it has to work harder to lubricate and cool itself down. This results in more fuel being burned, reducing your ATV’s overall fuel efficiency and increasing your expenses.

Furthermore, keeping an eye on the oil level and regularly changing it can also help prolong the life of your ATV’s engine. Fresh oil helps to keep all moving parts properly lubricated and reduces wear and tear on vital components.

In conclusion, as an avid rider, I have learned that maintaining the

My Buying Guide on Honda 400Ex Oil Capacity

As an owner of a Honda 400Ex, I have learned the importance of maintaining the proper oil capacity in my ATV. Having the right amount of oil not only ensures smooth performance, but also prolongs the life of the engine. In this buying guide, I will share my personal experience and tips on how to determine and maintain the correct oil capacity for your Honda 400Ex.

Determining the Oil Capacity

To determine the oil capacity of your Honda 400Ex, you need to refer to your owner’s manual. The manual will provide you with all the necessary information regarding your ATV’s maintenance, including its oil capacity. The Honda 400Ex has a total oil capacity of 1.65 liters or 1.74 quarts.

Choosing the Right Oil Type

It is important to choose the right type of oil for your Honda 400Ex to ensure optimal performance and engine protection. According to Honda, it is recommended to use a four-stroke motorcycle engine oil with a viscosity grade of SAE10W-40 or SAE10W-30 for all temperature ranges. It should also be labeled with API classification SG or higher.

I personally use and recommend using synthetic oils as they offer better protection and performance compared to conventional oils. However, always make sure to check if your specific model allows for synthetic oils before using them.

Checking and Maintaining the Oil Level

It is essential to regularly check and maintain the oil level in your Honda 400Ex. You can do this by following these simple steps:

1. Make sure your ATV is on level ground.
2. Locate the dipstick on the right side of your engine.
3. Unscrew and wipe clean with a cloth.
4. Reinsert the dipstick without screwing it in.
5. Check if the oil level reaches between the upper and lower marks on the dipstick.
6. If needed, add small amounts of oil at a time until it reaches the correct level.

It is important not to overfill as it can cause damage to your engine.

Changing Your ATV’s Oil

It is recommended by Honda to change your ATV’s oil every six months or after every 1000 miles (1600 km) whichever comes first. To change your ATV’s oil:

1. Warm up your ATV for a few minutes before draining out old oil.
2. Locate and remove both drain plugs located at bottom rear corner of engine case.
3. Drain out old oil completely.
4. Replace drain plugs securely.
5. Refill with new high-quality motorcycle-specific four-stroke engine oil according to manufacturer’s recommendations.
6.Let idle for several minutes after changing before riding again.

I personally like to change my filter as well every time I change my ATV’s oil for maximum performance.

In Conclusion

Maintaining proper levels and choosing high-quality oils are crucial in ensuring that your Honda 400Ex runs smoothly and efficiently for years to come. Regularly checking and changing your ATV’s oil will not only improve its performance but also extend its lifespan significantly.

I hope this buying guide has been helpful in understanding Honda 400Ex’s oil capacity and maintenance requirements so that you can keep enjoying an exceptional riding experience with peace of mind knowing that you are taking good care of your ATV’s engine!

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Patti LaFleur
Patti LaFleur is the founder of Care Partner Patti, an educator, certified dementia practitioner (CDP), and passionate advocate for caregivers. Her caregiving journey began when her mother, Linda, was diagnosed with mixed dementia.

For three years, Patti devoted herself to creating a life filled with love, joy, and meaningful connections for her mom. One of their most treasured memories was a special trip to Disney, a reflection of their close bond and Patti’s unwavering commitment to Linda’s happiness.

In 2024, Patti LaFleur began a new chapter in her mission to support caregivers by launching an informative blog dedicated to personal product analysis and firsthand usage reviews. Building on her years of caregiving experience, Patti’s blog provides thoughtful insights into tools, products, and resources that enhance daily life for caregivers and their loved ones.

Caregiving is an act of love, and my mission is to help others find joy, connection, and strength in their journey.