Which is a general fueling precaution?

• A. Check and ensure proper grade of fuel
• B. Use wet rags to clean the cap
• C. Keep engines running during fueling
• D. Ignore any fuel smell

Answer: (A)

Ensuring the correct fuel grade is used is essential because engines are designed to run on specific fuels with particular octane ratings and additives. Using the wrong grade can lead to improper combustion, knocking, reduced performance, and damage to fuel-system components, which in turn creates safety and reliability risks. Before fueling, verify that the fuel type matches what the equipment requires by checking labels, placards, and manuals, and ensure the correct grade is selected. If the grade isn’t correct, stop and correct it to protect the engine and avoid costly repairs.

Other options aren’t general fueling precautions: using a wet rag to clean the cap isn’t a standard practice and can spread contaminants or create slip hazards; keeping engines running during fueling is dangerous and not allowed; ignoring a fuel smell signals a potential leak or vapor issue that requires immediate attention.