Appointments & care. At Mayo Clinic, we take the time to listen, to find answers and to provide you the best care. Respiratory syncytial virus (RSV) is a virus that causes infections of the lungs and respiratory tract.
2015 Hyundai Sonata Eco: Gas Mileage Review. The 2015 Hyundai Sonata Eco is the Korean maker's most fuel-efficient mid-size sedan that doesn't use a hybrid powertrain. And it highlights the two parallel paths that automakers are taking as they work to boost gas mileage ratings to meet steadily rising corporate average fuel economy rules.
Your car will be fine. You can either add some octane booster or run it to half empty and fill up with premium to make midgrade fuel. That's literally how the pump does it, it does half premium and have regular. Or just run it to empty and fill back up with premium, no harm no foul.You car just won't be as efficient.hen a fuel/air mixture is compressed enough it will self ignite. Higher octane gas is used in higher compression engines to prevent pre-ignition or detonation. Using a higher octane gas in an engine that is designed for a lower octane will not hurt anything.