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How to Minimize Fuel System Problems When Using Ethanol-Blended Gasoline


Throughout its nearly 100-year history, Toro has been, and continues to be, committed to manufacturing products that operate safely and efficiently.

While the Environmental Protection Agency (EPA) currently limits an ethanol-gasoline blend of 10% ethanol (or E10) as a standard transportation fuel, the agency recently granted the ethanol industry a waiver increasing the allowable limit to 15% ethanol (or E15) for use in some motor vehicles only.

Toro® lawn mowers and snowblowers, in general, are approved for ethanol-gasoline blends up to E10. Current Toro products sold in the U.S., and those sold throughout our company's history, were not designed to run on fuel blends containing more than 10% ethanol.

Using gasoline containing more than E10 (10% ethanol), such as E15 (15% ethanol), E20 (20% ethanol), or E85 (up to 85% ethanol), may affect performance, damage the engine, and cause problems that may not be covered by the engine manufacturer's or Toro's warranty.

We recommend individuals read the Engine Operator's Manual and Equipment Operator's Manual for information on what fuel can, and cannot, be used in their machine and to understand applicable warranty coverage and exclusions.

Even E10 fuel blends will absorb water from the atmosphere and can cause corrosion of fuel system components. Since most carburetors and the gas tank are vented to the atmosphere in some manner, there is nothing to prevent fuel from absorbing moisture over time. Using fresh fuel (less than 30 days old) will help prevent water absorption from becoming a problem, as will adding a fuel stabilizer the day you buy it. Toro offers a Premium Fuel Treatment to help ensure reliable engine performance and protection against ethanol's harmful effects. The product is available from authorized Toro dealers or can be ordered from www.torodealer.com.

We recommend individuals read the Engine Operator's Manual and Equipment Operator's Manual for information on what fuel can, and cannot, be used in their machine and to understand applicable warranty coverage and exclusions.


Fuel Fact Tips


Toro offers the following preventive maintenance tips to minimize fuel system issues with outdoor power equipment...

Purchase only the amount of fuel that will be used in 30 days...more

Add fuel stabilizer to the fuel the day you buy it...more

Purchase unleaded gasoline with an octane rating of at least 87 when possible...more

Do not use gasoline with more than 10% ethanol (E10) by volume...more

Consider using gasoline without any ethanol (E0)...more

Gasoline with up to 15% MTBE by volume is acceptable...more

Do not use gasoline containing methanol...more


Throughout its nearly 100-year history, Toro has been, and continues to be, committed to manufacturing products that operate safely and efficiently.