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Using regular gas with ethanol can damage your lawn mower's engine by attracting moisture and causing corrosion. Typically, your lawn mower needs a gasoline with an 87 octane rating, but ethanol in regular gas will harm metal parts like the carburetor. To avoid repair costs and maintain engine performance, opt for ethanol-free gas or use a fuel stabilizer. Always verify the owner's manual for guidance and avoid gas stored over 30 days to ensure optimal operation. Discover the best practices next.Key TakeawaysRegular gas with ethanol can cause rust and damage to small engine parts.Ethanol in regular gas attracts moisture, leading to corrosion and blockages.Using regular gas may reduce engine power and increase repair costs.Regular gas can make starting difficult and shorten engine lifespan.Ethanol-free gas is recommended to prevent engine damage and ensure smooth operation.Understanding Different Types of GasolineMost lawn mowers use gasoline with an 87 octane rating.Lawn mowers typically run on gasoline with an 87 octane rating.Higher octane fuels, like 91 or 93, don't enhance performance and cost more.Use fresh gasoline, and check for additives that might affect the carburetor.Always consult your owner's manual.The Impact of Ethanol on Small EnginesEthanol in fuel can harm small engines by causing rust and damaging parts.It attracts moisture, leading to corrosion in metal components like carburetors and fuel lines. Ethanol also degrades rubber and plastic, causing leaks and performance issues.Consider using ethanol-free gas or a fuel stabilizer and maintain regular engine check-ups.How Regular Gas Affects Lawn Mower PerformanceUsing regular gas with ethanol in a lawn mower can cause problems.Ethanol attracts moisture, creating blockages and corrosion. This reduces engine power, increases repair costs, makes starting difficult, and shortens engine life.Avoid regular gas to ensure smooth operation.Identifying the Right Fuel for Your Lawn MowerUse ethanol-free gas in lawn mowers to avoid engine damage. Regular, mid-grade, and premium gasoline should have less than 10% ethanol. Ethanol-free is best as it prevents moisture and corrosion, ensuring a cleaner burn and reducing engine issues. Check the manufacturer's guidelines and avoid gas stored for over 30 days.Fuel TypeEthanol ContentRegular Gasoline10% or lessMid-grade Gasoline10% or lessPremium Gasoline10% or lessEthanol-Free Gasoline0%Tips for Proper Fuel Storage and MaintenanceStore gasoline in a cool, dry place. Use an approved gas can, add a fuel stabilizer, and avoid using old fuel. Close containers tightly. Follow these steps to keep your lawn mower running well.Use an approved, airtight gas can to prevent moisture and maintain quality.Mix a fuel stabilizer with gas right after purchase to keep it fresh.Use fuel within 30 days to prevent engine problems.Always seal containers tightly to prevent air and moisture from degrading the fuel.Expert Recommendations for Optimal Lawn Mower CareUse fuel with less than 10% ethanol to protect the mower's engine.Check oil, air filter, and spark plug regularly. Replace the air filter yearly and change oil every 25-50 hours.Regularly check the oil, air filter, and spark plug. Replace the air filter annually and change the oil every 25-50 hours.Sharpen blades every 20-25 hours for a clean cut. Look for rust or damage on the mower deck.If the mower vibrates, inspect the blade and engine mountings. Add a fuel stabilizer if storing the mower for a long time.Check the manual for oil type and replacement parts.People Also AskCan Using Premium Gas Improve My Lawn Mower's Performance?Using premium gas likely won't improve your lawn mower's performance.Most mowers are designed to run on regular unleaded gas with an octane rating of 87. Higher octane fuel, like premium, is formulated for high-compression engines, which lawn mowers typically lack.Using premium gas mightn't harm the engine, but it won't provide any tangible benefits either.Stick with regular gas to maximize efficiency and avoid unnecessary costs.Check your mower's manual for specific fuel recommendations.How Often Should I Change My Lawn Mower's Spark Plug?Change your lawn mower's spark plug every season or after 25 hours of use. This maintenance ensures efficient operation and fuel combustion.A well-functioning spark plug reduces engine misfires and improves fuel economy. Regular inspections can reveal carbon deposits or wear.Choose the correct plug type based on your mower's model. For example, copper spark plugs offer good conductivity but wear faster than iridium or platinum types, which last longer but cost more.What Are the Signs of Fuel Contamination in a Lawn Mower?Signs of fuel contamination in a lawn mower include difficulty starting, stalling, rough idling, and reduced performance.You might notice the engine sputtering or emitting unusual exhaust smoke. Contaminated fuel can damage the carburetor, leading to costly repairs.Use clean, fresh gasoline to prevent issues. Adding a fuel stabilizer can also help keep the fuel system clean and functional.Regular maintenance checks are essential to ensure optimal mower performance and longevity.Can I Use Fuel Stabilizers Year-Round in My Lawn Mower?Yes, you can use fuel stabilizers year-round in your lawn mower.Fuel stabilizers prevent fuel deterioration by inhibiting oxidation, reducing the risk of gum and varnish buildup in your mower's engine. They ensure smoother starts and consistent performance.When choosing a stabilizer, consider options like STA-BIL or Sea Foam, which have proven efficacy.Ensure to follow the recommended dosage on the product label for optimal results.Always store your lawn mower in a cool, dry place.Are There Environmentally Friendly Fuel Options for Lawn Mowers?Yes, eco-friendly fuel options exist for lawn mowers.You can use ethanol-free gasoline, which reduces emissions and improves engine performance.Another option is biodiesel blends made from natural oils, offering a renewable choice.Electric mowers powered by rechargeable batteries also provide an environmentally friendly alternative, eliminating fuel emissions entirely.Consider propane conversion kits that can turn your gas mower into a cleaner-burning machine.Always check compatibility with your specific lawn mower model.Wrapping UpRegular gas won't ruin your lawn mower, but it's not the best choice. Ethanol in regular gas can attract moisture, causing corrosion and gumming in small engines. For smoother mowing, use ethanol-free or premium gas if your manual suggests it. Store fuel in a sealed container to keep it fresh. Regular upkeep, like checking the air filter and spark plug, keeps your mower running longer. Stick to the manual for the best results.