• FREQUENTLY ASKED QUESTIONS

• What is ethanol, and ethanol-blended fuel?
• Will ethanol work in fuel-injected engines?
• Does ethanol lead to plugged fuel filters?
• What care should be given to a car not driven in a long time?
• How long does it take to check my transmission?
• What type of transmission fluid should I use in my car?
• Is changing the oil & oil filter really important?
• On a long trip what maintenance should be done?
• Does using air-conditioning affect my fuel economy?
• How do I use antilock brakes in an emergency?
• How much air should be put in tires?
• When stopped for extended periods should I shut off my engine?
• My check engine, transmission or overdrive light is on or flashes?
• Is changing my air filter important?
• How do I clean dirty battery terminals?
• Can spark plugs last 100,000 miles?
• How often should I wash & wax my car?
• How do I know I will not be overcharged for my repair?

Does using air-conditioning affect my fuel economy?

Most estimates are that the use of air conditioning can reduce fuel economy by one to two miles per gallon. In large cars or when traveling in extreme heat conditions air conditioning cuts fuel economy up to four miles per gallon.