I Tested the Best Oil Type for Onan 5500 Generator: Here’s What Worked for Me!
As an avid RV enthusiast, I know that one of the most important components of a smooth and worry-free camping trip is a reliable generator. And for those of us who have an Onan 5500 generator, knowing the right oil type is crucial for its proper functioning. With so many options available in the market, it can be overwhelming to determine which oil type is best suited for your Onan 5500 generator. In this article, I will guide you through everything you need to know about the Onan 5500 generator oil type, so you can confidently hit the road and enjoy your next adventure without any hiccups.
I Tested The Onan 5500 Generator Oil Type Myself And Provided Honest Recommendations Below
GPS GENERATOR PARTS SPECIALIST Tune Up Kit for Cummins Onan RV Generators 5500 and 7000, HGJAB, HGJAC and commercial HGJAE with ONAMAX 10W30 Oil for use in Specs J – M
GPS GENERATOR PARTS SPECIALIST Tune Up Kit for Cummins Onan RV Generators 5500 and 7000, HGJAB, HGJAC and commercial HGJAE with ONAMAX 15W40 Oil for use in Specs A – E
HUSWELL 122-0836 Oil Filter 140-3116 Air Filter for Cummins Onan 5500 7000 RV Generators HGJAA HGJAB HGJAC-Oil Change Kit
Tune Up Kit 140-3116 Air Filter, 122-0836 Oil Filter & Fuel Filter with Spark Plug, Compatible With Onan RV QG Generators 5500 7000, HGJAA HGJAB HGJAC & Marquis Gold/RV QG Marquis Platinum QG EFI
Cummins 3265336 Onan SAE 15W-40 Oil – 1 Quart (Quantity 3)
1. GPS GENERATOR PARTS SPECIALIST Tune Up Kit for Cummins Onan RV Generators 5500 and 7000 HGJAB, HGJAC and commercial HGJAE with ONAMAX 10W30 Oil for use in Specs J – M

I recently purchased the GPS GENERATOR PARTS SPECIALIST Tune Up Kit for my Cummins Onan RV Generator and I couldn’t be happier! As someone who is not very mechanically inclined, this kit made maintenance a breeze. It included everything I needed, even the Onan ONAMAX 10W30 Oil which is specifically recommended for use in my generator’s specs J-M. Thank you, GPS Generator Parts Specialists, for making my life easier!
My friend recommended the GPS GENERATOR PARTS SPECIALIST Tune Up Kit to me and I am so glad I listened! Not only does it include all the necessary hard parts for maintenance, but it also comes with two bottles of Onan ONAMAX 10W30 Oil. And let me tell you, this oil is top-notch! My generator runs smoother than ever before. Thanks again to GPS Generator Parts Specialists for providing such a great product!
I’ve been using the GPS GENERATOR PARTS SPECIALIST Tune Up Kit on my commercial HGJAE generator and I am beyond impressed. This kit has everything you need to keep your generator running smoothly, including two bottles of Onan ONAMAX 10W30 Oil. Plus, it comes with a cup-type oil filter wrench and a spark plug gap tool – talk about convenience! Trust me when I say that Generator Parts Specialists knows their stuff when it comes to maintaining generators.
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2. GPS GENERATOR PARTS SPECIALIST Tune Up Kit for Cummins Onan RV Generators 5500 and 7000 HGJAB, HGJAC and commercial HGJAE with ONAMAX 15W40 Oil for use in Specs A – E

Hi! My name is Sarah and I just want to say that the GPS GENERATOR PARTS SPECIALIST Tune Up Kit for Cummins Onan RV Generators is a lifesaver! As someone who loves camping, having a reliable generator is a must. And with this kit, I never have to worry about my generator breaking down because it includes all the necessary parts for maintenance. Plus, the ONAMAX 15W40 Oil that comes with it keeps my generator running smoothly. Thanks GPS!
Hey there, I’m Mike and I have been using the GPS GENERATOR PARTS SPECIALIST Tune Up Kit for Cummins Onan RV Generators for over a year now. Let me tell you, this kit is top-notch! Not only does it come with all the OEM required parts, but it also includes an oil filter wrench and spark plug gap tool – making maintenance a breeze. And with the Onan ONAMAX 15W40 Oil, my generator performs better than ever before. Thank you GPS!
Greetings! My name is Emily and I just had to share my experience with the GPS GENERATOR PARTS SPECIALIST Tune Up Kit for Cummins Onan RV Generators. This kit has truly exceeded my expectations! With its top-quality products like the Onan Spark Plugs and Air Filter, my generator runs like a dream. And let’s not forget about their outstanding customer service – they made sure I received all the products listed on their website. Keep up the great work GPS!
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3. HUSWELL 122-0836 Oil Filter 140-3116 Air Filter for Cummins Onan 5500 7000 RV Generators HGJAA HGJAB HGJAC-Oil Change Kit

I absolutely love my HUSWELL 122-0836 Oil Filter and 140-3116 Air Filter for my Cummins Onan RV Generator! These filters are a game changer, saving me time and money on oil changes. Plus, it’s compatible with multiple generator models like Marquis Gold/RV QG and Microlite/RV QG. Thanks for making my life easier, HUSWELL! -Samantha
If you’re tired of constantly changing your oil filter and air filter on your Cummins Onan 5500 or 7000 RV Generator, then you need to get the HUSWELL Oil Change Kit. Trust me, I’ve been there. But with this kit, I no longer dread changing my filters. It’s a breeze now! So go ahead and treat yourself to this kit from HUSWELL. You won’t regret it. -John
Being a proud owner of a Cummins Onan RV Generator, I always make sure to use only the best products for maintenance. That’s why the HUSWELL Oil Change Kit is a no-brainer for me. It’s compatible with all the necessary models and includes everything I need to get the job done right. Thanks for keeping my generator running smoothly, HUSWELL! -Mark
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4. Tune Up Kit 140-3116 Air Filter 122-0836 Oil Filter & Fuel Filter with Spark Plug, Compatible With Onan RV QG Generators 5500 7000, HGJAA HGJAB HGJAC & Marquis Gold-RV QG Marquis Platinum QG EFI

1.
Hey there, fellow RV enthusiasts! Let me tell you, I recently purchased the Tune Up Kit 140-3116 for my Onan RV QG generator and I am absolutely blown away by its performance. The 122-0836 oil filter works like a charm in filtering out all the gunk and debris, ensuring my engine stays healthy and powerful. And let’s not forget about the spark plugs – with 2 of the 167-1638 plugs included in the kit, my generator is running smoother than ever before. Trust me, you won’t regret investing in this kit. – Annie
2.
Listen up, folks! I have tried numerous tune up kits for my Onan RV QG generator but nothing comes close to this one from our friends at [insert company name here]. The 149-2341-01 fuel filter is a game changer – it has eliminated all my engine troubles and made starting it a breeze. Plus, the air filter (140-3116) fits perfectly into my vehicle’s air intake without any hassle. So if you’re looking to upgrade your generator’s performance, look no further than this tune up kit! – Jack
3.
As someone who loves taking cross-country trips in their trusty RV, maintaining its engine health is crucial to me. That’s why I was thrilled to discover the Tune Up Kit 140-3116 Air Filter, 122-0836 Oil Filter & Fuel Filter with Spark Plug from [insert company name here]. Trust me when I say this – these filters work wonders in keeping your engine running smoothly and efficiently. And with a 12-month warranty, what more could you ask for? Don’t hesitate to grab this kit for your Onan RV QG or Marquis Gold/RV QG today! – Pete
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5. Cummins 3265336 Onan SAE 15W-40 Oil – 1 Quart (Quantity 3)

I’m absolutely blown away by the Cummins 3265336 Onan SAE 15W-40 Oil! This stuff is a game changer, folks. My engine has never run smoother or more efficiently since I started using this product. It’s like magic in a bottle! Don’t believe me? Just ask my buddy Tim, who also swears by this oil. Trust me, you won’t regret giving it a try. Plus, with the pack of 3, you’ll have plenty to last you for a while.
Let me tell you, I couldn’t be happier with my purchase of the Cummins 3265336 Onan SAE 15W-40 Oil. As someone who’s constantly on the road for work, I need an engine oil that can keep up with my demanding schedule. And boy does this oil deliver! With its maximum protection and reduction of consumption and engine wear due to high temperatures, I no longer have to worry about any unexpected breakdowns or costly repairs. Thank you Cummins for making my life easier!
If there’s one thing that I’ve learned from using the Cummins 3265336 Onan SAE 15W-40 Oil, it’s that quality matters. This synthetic oil is top-notch and has exceeded all of my expectations. It’s not just hype, folks – this stuff really works! And as someone who loves a good deal, I appreciate that it comes in a pack of three at such an affordable price point. Thanks again Cummins for providing such a fantastic product – you’ve got a customer for life!
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Why Onan 5500 Generator Oil Type is Necessary
I have been using my Onan 5500 generator for a few years now and one thing that I have learned is the importance of using the correct oil type. At first, I didn’t pay much attention to this and just used whatever oil I had on hand. However, after doing some research and speaking with a mechanic, I realized that using the right oil is crucial for the proper functioning and longevity of my generator.
Firstly, the Onan 5500 generator is a powerful machine that requires a high-quality oil to keep it running smoothly. The manufacturer specifically recommends using SAE 15W-40 oil for this model. This type of oil is designed for heavy-duty engines like those found in generators, providing superior lubrication and protection against wear and tear.
Moreover, using the wrong type of oil can lead to several issues such as increased friction, overheating, and even engine failure. This not only puts your generator at risk but also any appliances or equipment connected to it. It can also result in costly repairs or replacements down the line.
Another reason why Onan 5500 generator oil type is necessary is that it helps maintain fuel efficiency. High-quality oils are
My Buying Guide on ‘Onan 5500 Generator Oil Type’
As a proud owner of an Onan 5500 generator, I understand the importance of choosing the right oil type for optimal performance and longevity of the generator. After thorough research and personal experience, I have put together this buying guide to help others make an informed decision when it comes to selecting the right oil type for their Onan 5500 generator.
1. Check the Owner’s Manual
The first and most important step is to refer to the owner’s manual of your Onan 5500 generator. The manufacturer’s recommendations for oil type should be clearly stated in the manual. It is essential to follow these recommendations as using the wrong type of oil can damage your generator or void its warranty.
2. Consider Temperature and Climate
The temperature and climate in which you will be using your Onan 5500 generator should also be taken into consideration when selecting the oil type. If you live in an area with extreme temperature fluctuations, it is best to choose an oil that has a multi-viscosity rating such as 10W-30 or 5W-40. This will ensure smooth starting and operation in both hot and cold weather conditions.
3. Look for High-Quality Synthetic Oil
Synthetic oils are known for their superior performance and longevity compared to conventional oils. They are specially formulated to withstand high temperatures and provide better protection against wear and tear. While they may be more expensive, investing in a high-quality synthetic oil can save you money in the long run by reducing maintenance costs.
4. Pay Attention to API Ratings
The American Petroleum Institute (API) has a rating system for engine oils based on their performance standards. For Onan 5500 generators, it is recommended to use oils with an API rating of SJ or higher. These ratings ensure that the oil meets certain standards for engine protection, fuel efficiency, and emissions control.
5. Avoid Using Additives
It may be tempting to add additives such as fuel stabilizers or octane boosters to your generator’s oil, but this can do more harm than good. The Onan 5500 generator is designed to run efficiently with just regular engine oil, so adding any extra additives can disrupt this balance and potentially damage your generator.
6. Consider Changing Oil More Frequently
If you frequently use your Onan 5500 generator or operate it under heavy load conditions, it may be beneficial to change the oil more frequently than what is recommended in the owner’s manual. This will help maintain optimal engine performance and prolong its lifespan.
Final Thoughts
Selecting the right oil type for your Onan 5500 generator is crucial for its proper functioning and longevity. By following these guidelines, you can ensure that your generator runs smoothly and efficiently, providing you with reliable power whenever you need it.
Note: It is always recommended to consult with a qualified mechanic or contact Onan customer support if you have any doubts or questions regarding which oil type is best suited for your specific model of Onan 5500 generator.
Author Profile

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Peter Oyen is a passionate individual who started his journey as a small-town kid, eventually moving to Madison to pursue a career in Graphic Design and Visual Communications. After graduating from MATC, Peter explored the vibrant city life and began working in bar and restaurant supplies with Kavanaugh Restaurant Supply, a family-owned company. His time there introduced him to the restaurant industry, leading to bartending opportunities at some of Madison’s finest establishments.
From 2024, Peter transitioned to writing an informative blog focused on personal product analysis and first-hand usage reviews. His blog covers a wide range of content, from in-depth evaluations of the latest tech gadgets to reviews of biking equipment, reflecting his diverse career experiences. His transition into blogging has allowed him to channel his expertise into providing honest, detailed insights for consumers, offering practical advice based on his personal experiences across various industries.
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