2011 Volvo C70 Owner's Manual - Page 139

06 Starting and driving Fuel requirements Octane rating Minimum octane change gasoline brands to fully utilize your engine's capacity, and for the smoothest possible operation. Use of Additives With the exception of gas line antifreeze during winter months, do not add solvents, thickeners, or other store-bought additives to your vehicle's fuel, cooling, or lubricating systems. Overuse may damage your engine, and some of these additives contain organically volatile chemicals. Do not needlessly expose yourself to these chemicals. NOTE When switching to higher octane fuel or changing gasoline brands, it may be necessary to fill the tank more than once before a difference in engine operation is noticeable. Fuel Formulations Do not use gasoline that contains lead as a knock inhibitor, and do not use lead additives. Besides damaging the exhaust emission control systems on your vehicle, lead has been strongly linked to certain forms of cancer. Many fuels contain benzene as a solvent. Unburned benzene has been strongly linked to certain forms of cancer. If you live in an area where you must fill your own gas tank, take precautions. These may include: G028920 WARNING Never carry a cell phone that is switched on while refueling your vehicle. If the phone rings, this may cause a spark that could ignite gasoline fumes, resulting in fire and injury. Typical pump octane label Volvo recommends premium fuel for best performance, but using 87 octane1 or above will not affect engine reliability. Volvo engines are designed to achieve rated horsepower, torque, and fuel economy performance using premium 91 octane fuel. WARNING Carbon monoxide is a poisonous, colorless, and odorless gas. It is present in all exhaust gases. If you ever smell exhaust fumes inside the vehicle, make sure the passenger compartment is ventilated, and immediately return the vehicle to a trained and qualified Volvo service technician for correction. 06 • standing upwind away from the filler nozzle while refueling Demanding driving In demanding driving conditions, such as operating the vehicle in hot weather, towing a trailer, or driving for extended periods at higher altitudes than normal, it may be advisable to switch to higher octane fuel (91 or higher) or to • refueling only at gas stations with vapor recovery systems that fully seal the mouth of the filler neck during refueling • wearing neoprene gloves while handling a fuel filler nozzle. 1 AKI (ANTI KNOCK INDEX) is an average of the Research Octane Number (RON) and the Motor Octane Number (MON), MON+RON/2. `` 139