Choosing the right gas for your lawn mower is crucial for its performance and longevity. While most lawn mowers run on standard unleaded gasoline, understanding the nuances can help you keep your engine running smoothly for seasons to come. Factors like octane rating, ethanol content, and fuel stabilizers play a role in protecting your mower’s components. We’ve rounded up some of the best options and essential considerations to help you make an informed decision.
Quick Product Comparison
| Product | Image | Check Price |
|---|---|---|
| 1. Briggs & Stratton Fuel Tank |  |
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| 2. B&S Gas Fuel Tank |  |
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| 3. Briggs Stratton Fuel Tank |  |
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| 4. Briggs & Stratton Fuel Tank |  |
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Our Top 4 Best Gas For A Lawn Mower Reviews – Expert Tested & Recommended
1. Briggs & Stratton Fuel Tank with Cap for 590568 Lawn Mowers – Durable Replacement Gas Tank Parts
The Briggs & Stratton Fuel Tank with Cap for 590568 Lawn Mowers offers exceptional quality and performance. This is a direct replacement for Briggs & Stratton part # 84004660 and fits all mower models requiring a 590568 fuel tank. It’s made from high-quality plastic with reinforced walls and secure screw ports for long-lasting use.
Key Features That Stand Out
- ✓ Direct replacement for Briggs & Stratton part # 84004660
- ✓ Durable construction with reinforced walls
- ✓ Includes a child-resistant screw-on cap for safety
- ✓ Secure screw ports for reliable fuel cap attachment
Why We Recommend It
This Briggs & Stratton fuel tank is a reliable and durable choice for replacing your old or damaged tank. Its robust construction ensures it can withstand regular use, and the included safety cap provides peace of mind. It’s an excellent option for anyone looking to keep their mower running efficiently.
Best For
Ideal for users needing a direct replacement for their Briggs & Stratton 590568 fuel tank. Perfect for routine maintenance or repairs on compatible lawn mower engines.
Pros and Cons
Pros:
- Easy installation and perfect fit for compatible models.
- Sturdy and durable plastic construction.
- Includes a secure fuel cap that meets safety standards.
- Enhances the longevity of your lawn mower engine.
Cons:
- May require specific wrench sizes for installation.
- Only compatible with specific Briggs & Stratton part numbers.
Customer Reviews
Customer Review: “This gas tank fit perfectly. I bought it for a Troy built TB110 140cc mower with a Briggs and Stratton. Came with plenty of fuel hose and clamps. The fuel cap retention is on the outside, which is better than factory for access. Good cap and seal. I was very surprised.”
Customer Review: “I purchased this product as a replacement for the fuel tank on a TroyBilt TB110 mower with the 550EX engine. The old gas cap would not stay closed when the mower was in use which allowed fuel to escape. Replacing the cap itself DID NOT WORK, so a replacement tank was required. This tank fit perfectly and was easy to install.”
2. B&S Gas Fuel Tank with Cap for B&S Engines & More – Replaces 699374, 494213 Lawn Mower Parts
This gas fuel tank with cap is designed for B&S engines and is a suitable replacement for part numbers 699374 and 494213. It’s compatible with a range of B&S small gasoline engines from 4HP to 6.75HP. Crafted from corrosion-resistant plastic, it aims to maximize engine life and ensure reliable performance.
Key Features That Stand Out
- ✓ Replaces Briggs & Stratton part numbers 699374, 494213, and more.
- ✓ Compatible with 4HP to 6.75HP B&S engines.
- ✓ Made from durable, corrosion-resistant plastic.
- ✓ Precision injection molding for a good fit.
Why We Recommend It
The B&S Gas Fuel Tank offers a cost-effective solution for replacing a faulty fuel tank on many Briggs & Stratton powered mowers. Its durable construction and compatibility with common part numbers make it a convenient choice for DIY repairs, ensuring your mower can get back to work without a hitch.
Best For
Owners of lawn mowers with compatible Briggs & Stratton engines who need a reliable and affordable fuel tank replacement. It’s great for those looking to perform routine maintenance or fix leaks.
Pros and Cons
Pros:
- Good value for the price.
- Fits many B&S engines without issues.
- Corrosion-resistant material for durability.
- Comes with a cap.
Cons:
- Fuel outlet might lack a barb, requiring careful clamp use.
- May not include all mounting hardware, so reuse original parts when possible.
Customer Reviews
Customer Review: “Went on a Briggs and Stratton model 917385351 . Fit exactly as original. Pretty good quality. No leaks and best price online. All bolt holes line up, just reuse bolts. Easy 5min install.”
Customer Review: “Fit appropriately, seems to be decent quality. Fuel outlet where fuel hose connects to does not have a barb on the end like the OEM one, but still fit fine without leaking with OEM clamp on it.”
3. 84004660 Fuel Gas Tank with Cap for Briggs Stratton 093J02 Lawn Mower Engines
This fuel gas tank package includes the tank with a cap, a shut-off valve, fuel line, and clamps, making it a comprehensive replacement kit. It’s designed to fit Briggs Stratton models requiring part numbers 590568, 84004660, and 799585, including popular series like 093J02, 08P502, and 09P702. A carburetor cleaning kit is also included.
Key Features That Stand Out
- ✓ Complete kit including shut-off valve and fuel line.
- ✓ Fits Briggs Stratton 093J02 and other compatible engine series.
- ✓ Includes a carburetor cleaning kit for added value.
- ✓ Replaces multiple common Briggs & Stratton part numbers.
Why We Recommend It
For an affordable and complete solution, this kit is a fantastic budget-friendly option. It provides not just the fuel tank but also essential components to get your mower running again, making it an excellent value for homeowners.
Best For
DIY mechanics and homeowners looking for a cost-effective and comprehensive fuel tank replacement solution for their Briggs Stratton lawn mowers.
Pros and Cons
Pros:
- Excellent value for the price, especially with included accessories.
- Fits and functions well on compatible engines.
- Provides all necessary parts for replacement.
- Great for those on a tight budget.
Cons:
- Fuel line might be slightly stiff for some users.
- Quality of included clamps could be improved.
Customer Reviews
Customer Review: “Perfectly replaces the one the squirrels chewed holes into.”
Customer Review: “This replaces the factory tank perfectly. I am very happy with it.”
4. 84004115 Fuel Gas Tank with Cap for 093J02 Lawn Mower Engines – Durable Replacement Part
This durable replacement fuel gas tank with cap is designed to address leaking issues common with failing mower tanks. It replaces OE part numbers 594112 and 84004115 and is compatible with various 093J02 models and other 100-series engines. Rigorous testing ensures reliable performance for your lawn mower.
Key Features That Stand Out
- ✓ Directly replaces OE part numbers 594112 and 84004115.
- ✓ Compatible with multiple 093J02 and 100-series engines.
- ✓ Designed to solve common leaking fuel tank problems.
- ✓ Built for durability and long-lasting use.
Why We Recommend It
If you’re experiencing fuel leaks, this replacement tank is a solid option. It’s designed to fit specific mower models and addresses a common problem, helping to keep your mower operational and safe. While it doesn’t have a built-in vent, a small modification can resolve that.
Best For
Lawn mower owners facing fuel leaks or issues with their existing 093J02 or compatible engines. It’s a practical fix for maintaining your equipment.
Pros and Cons
Pros:
- Addresses common fuel leak issues effectively.
- Fits well on specific Toro models and similar mowers.
- Affordable and readily available.
- Easy to install for most users.
Cons:
- Does not have a built-in air vent; may require drilling a small hole in the cap.
- Included fuel hose might be slightly longer than needed.
Customer Reviews
Customer Review: “Fit my Toro 20332 perfectly. Hose that is included or about a half inch too long. Gas cap fits perfectly unlike the other tank that had a completely different cap. Tank installed easily and the quality seems good. Only one thing I will mention is this tank doesn’t have the air vent in it. Had to make a pin hole in the cap for air flow. Mower was starving for fuel but the pin hole has helped it function properly!”
Customer Review: “Worked great and fit good on my toro lawn mower that had a leaky gas tank. Got this one and it came the next day. Fast, Affordable and easy to install!”
Complete Buying Guide for Gas For A Lawn Mower
Essential Factors We Consider
When selecting the best gas for your lawn mower, we look at several key factors. Primarily, the type of fuel your mower’s engine requires is paramount. Most residential mowers use standard unleaded gasoline. However, the octane rating is worth noting; while higher octane isn’t typically necessary for small engines, it can sometimes be beneficial. More importantly, we consider the ethanol content. Ethanol can attract moisture and degrade rubber and plastic components over time, leading to fuel system issues. Therefore, we prioritize ethanol-free gasoline or fuels with a low ethanol content (E10 or less) if ethanol-free isn’t available. Lastly, the fuel’s freshness is critical. Stale gas can cause starting problems and engine damage. Using a fuel stabilizer, especially if you store your mower for extended periods, is a great way to maintain fuel quality. For those with older or specialized mowers, consulting the owner’s manual is always the best first step. Understanding these elements helps ensure your mower runs efficiently and avoids costly repairs, much like choosing the right way to handle old gas.
Budget Planning
The cost of gasoline for your lawn mower can add up, especially during peak mowing season. While premium fuels aren’t usually necessary for standard lawn mowers, you might find that purchasing ethanol-free gas, which can sometimes be slightly more expensive, offers better long-term value by protecting your engine. Buying gas in larger quantities from a reputable station, if you have safe storage, can sometimes offer savings. Additionally, using a quality fuel stabilizer can prevent the need to drain and replace fuel, saving both money and hassle. For many, the slightly higher upfront cost of using the correct, high-quality fuel is a worthwhile investment to prolong the life of their lawn mower, similar to how investing in the best fertilizers for a thicker lawn pays off in the long run.
Final Thoughts
Ultimately, the “best” gas for your lawn mower is the one that keeps its engine running smoothly and reliably. For most users, this means using fresh, standard unleaded gasoline with a low or no ethanol content. Always consult your owner’s manual for specific recommendations. Using fuel stabilizers and proper storage practices are key to preventing fuel-related problems, especially if your mower sits idle for periods. Ensuring your mower is properly fueled is just one part of maintaining a healthy lawn; regular mowing and proper care are equally important. For instance, knowing the best mowing techniques can significantly impact your lawn’s appearance and health.
Frequently Asked Questions
Q: What type of gas should I use in my lawn mower?
A: Most residential lawn mowers run on standard unleaded gasoline with an octane rating of 87 or higher. It’s best to use fresh gasoline and look for options with low or no ethanol content (E10 or less) to protect your engine’s fuel system components.
Q: Is ethanol bad for lawn mower engines?
A: Yes, ethanol can be detrimental to lawn mower engines over time. It can absorb moisture, which can lead to corrosion, and it can degrade rubber and plastic fuel system components. If you must use ethanol-containing fuel, using a fuel stabilizer is highly recommended.
Q: How long does gasoline last in a lawn mower?
A: Fresh gasoline typically remains stable for about 30 days. After that, it begins to degrade, losing its combustibility and potentially causing engine problems. Using a fuel stabilizer can extend this shelf life to 12 months or more.
Q: Can I use premium gas in my lawn mower?
A: While you can use premium gasoline, it’s generally not necessary for most lawn mower engines. Standard unleaded gasoline with the recommended octane rating is sufficient and more cost-effective. Higher octane fuels are designed for higher compression engines.
Q: What is the best fuel stabilizer for lawn mowers?
A: Popular and effective fuel stabilizers include Sta-Bil, PRI-G, and Sea Foam. These products help prevent fuel from degrading, keep carburetors clean, and protect against moisture, especially during long-term storage.
Keeping your lawn mower running smoothly starts with the right fuel. By understanding the best gas options and following simple maintenance tips, you can ensure your mower performs at its best year after year. If you’re looking for more information on mower maintenance, consider checking out guides on how to start a lawn mower after sitting for years or learning about the best practices for storing a lawn mower for winter. Happy mowing!