The whirring of a lawnmower engine is a familiar summer sound. But before you can get that satisfying feeling of a freshly cut lawn, you need to know what fuel your mower needs. With so many different types of gasoline out there, it’s easy to get confused. This article will guide you through the world of lawnmower fuel, explaining what type you should use, how to choose the best gas, and some essential tips for storing and handling your fuel safely.
In short, most lawnmowers run on regular unleaded gasoline, typically with an octane rating of 87 or 89. However, some high-performance mowers might require premium gasoline with a higher octane rating. The best way to be sure is to consult your owner’s manual.
What Type of Gas Do I Use for My Lawn Mower?
The most important thing to remember is that you should never use diesel fuel in a gas-powered lawnmower. Diesel engines are designed differently and using the wrong fuel can severely damage your mower.
The majority of lawnmowers are designed to run on regular unleaded gasoline, which is the most common type available at gas stations.
Understanding Octane Ratings
Octane rating measures a gasoline’s resistance to knocking or pinging. Higher octane ratings offer better resistance to knocking, which can be beneficial in high-performance engines.
- 87 Octane (Regular): This is the most common and affordable type of gasoline. It is suitable for most standard lawnmowers.
- 89 Octane (Mid-grade): This gasoline offers slightly better performance than regular but may not be necessary for most lawnmowers.
- 91+ Octane (Premium): High-performance lawnmowers or those with high compression engines may benefit from using premium gasoline.
Checking Your Owner’s Manual
The best way to determine the correct type of gasoline for your lawnmower is to consult your owner’s manual. The manual will clearly state the recommended fuel type and octane rating.
When in Doubt, Ask a Professional
If you’re unsure about the fuel requirements for your lawnmower, it’s always a good idea to ask a knowledgeable person at a local hardware store or a lawn care specialist. They can provide specific guidance based on your mower’s model and engine type.
Tips for Choosing the Best Gas for Your Lawn Mower
Even if your lawnmower runs on regular unleaded gasoline, there are a few factors to consider when choosing the best gas:
Freshness Matters
Gasoline is a volatile substance and it deteriorates over time. Old gasoline can gum up your mower’s engine and cause problems.
- Buy small quantities: Don’t buy more gas than you need at once.
- Use fuel stabilizers: Consider adding a fuel stabilizer to your gasoline, especially if you store your mower for extended periods.
Avoid Ethanol
Ethanol is a biofuel often added to gasoline. While ethanol is generally good for the environment, it can cause problems with older lawnmowers and damage parts like fuel lines and rubber seals.
- Look for ethanol-free gasoline: Many gas stations now offer ethanol-free gasoline, which is specifically designed for small engines.
Don’t Top Off the Tank
It’s tempting to fill your mower’s tank to the brim, but it’s not recommended. Gasoline expands when it heats up, and a full tank can overflow if the weather gets hot.
- Leave some space: Fill the tank to about 90% capacity to allow for expansion.
Storing and Handling Gasoline Safely
Gasoline is flammable and should be handled with care. Here are some essential safety tips:
Store in a Well-Ventilated Area
Always store gasoline in a well-ventilated area away from heat, sparks, and open flames.
Use Approved Containers
Use approved gasoline containers with a tight-fitting lid and a safety spout. Never use glass containers to store gasoline.
Follow Handling Precautions
- Never smoke near gasoline.
- Keep gasoline away from children and pets.
- Always wear eye protection when handling gasoline.
- Keep your mower’s tank closed when not in use.
Conclusion
Finding the right gasoline for your lawnmower is crucial for optimal performance and a long engine life. Remember to check your owner’s manual for specific recommendations and choose fresh, high-quality gasoline. By following these tips and prioritizing safety, you can keep your mower running smoothly and enjoy a beautiful, manicured lawn for years to come.
FAQs
Here are some frequently asked questions about choosing the right gas for your lawn mower:
What kind of gas should I use for my lawn mower?
The best gas for your lawn mower is regular unleaded gasoline with an octane rating of 87 or higher. While premium gas is more expensive, it doesn’t provide any significant benefits for most lawn mowers. It’s important to note that ethanol can damage your lawn mower engine, so avoid using gas with more than 10% ethanol. Ethanol-free gasoline is the best option if available, but not always accessible.
Why can’t I use diesel in my lawn mower?
Lawn mower engines are specifically designed to run on gasoline. Diesel engines operate under significantly higher compression, and diesel fuel is not compatible with the fuel delivery system of gasoline engines. Using diesel in a lawn mower will damage the engine and likely render it unusable.
Can I use old gas in my lawn mower?
It’s not recommended to use old gas in your lawn mower. Gasoline degrades over time, becoming less potent and gumming up the engine. If you suspect your gas is old, it’s best to use a fuel stabilizer to prevent deterioration or simply use fresh gas.
Is there a specific type of gas for my specific lawn mower?
While some lawn mower manufacturers may recommend specific fuel types, the general rule of thumb is to use regular unleaded gasoline with an octane rating of 87 or higher. Check your owner’s manual for any specific instructions for your model.
Does it matter what season it is?
Regardless of the season, you should always use fresh, high-quality gasoline in your lawn mower. During the winter, it’s particularly important to use fuel stabilizer to prevent the gas from degrading during long periods of storage.
Is there any specific time to buy gas for my lawn mower?
You can buy gas for your lawn mower any time of the year. However, it’s wise to avoid purchasing gasoline on very hot days, as the heat can cause evaporation and reduce the potency of the fuel.
How often should I change the gas in my lawn mower?
It’s generally recommended to change the gas in your lawn mower every 30 days, even if it hasn’t been used. This helps to prevent the gas from degrading and damaging the engine. If you use your lawn mower frequently, you may not need to change the gas as often, but it’s still a good practice to do so at least once a month.