Porsche Carrera 911 997 owners manual page 219

text version of content this owner's manual page from owners manual to the vehicle Porsche Carrera 911, year of production 2004 - 2011:

Unleaded fuels may not be available outside the Fuels containing ethanolFuel Evaporation Control continental U.S. and Canada. Therefore, we rec- ommend you do not take your car to areas or Do not use any fuels containing more than 10 per-Fuel tank venting countries where unleaded fuel may not be availa-cent ethanol by volume. ble. We recommend, however, to change to a different The evaporation chamber and the carbon canister Octane ratings fuel or station if any of the following problems oc-prevent fuel from escaping to the atmosphere at cur with your vehicle: extreme high outside temperatures, when driving Octane rating indicates a fuel’s ability to resist det-– Deterioration of driveability and performance. abruptly around curves and when the car is parked onation. Therefore, buying the correct octane gas at an incline or in any other nonlevel position. is important to prevent engine “damage”. – Substantially reduced fuel economy. – Vapor lock and non-start problems, especially Vapor control system and storage The RON octane rating is based on the research at high altitude or at high temperature. method. The CLC (U.S. Cost of Living Council oc- When the fuel tank is filled, vapors are collected in tane rating) or AKI (antiknock index) octane rating – Engine malfunction or stalling. the evaporation chamber by a vent line leading the usually displayed on U.S. fuel pumps is calculated vapors to the carbon canister where they are as research octane number plus motor octane Portable Fuel Containers stored as long as the engine does not run. number, divided by 2, that is written as: Danger! Purge system RON+MON or R+M 2 2 Portable fuel containers, full or partially When the engine is running, the fuel vapors from empty, may leak causing an explosion, or re-the canister will be mixed with fresh air from the The CLC or AKI octane rating is usually lower than sult in fire in case of an accident. ambient air of the canister. This mixture will be the RON rating: f Never carry additional fuel in portable contain-directed to the intake air housing by the tank vent ers in your vehicle. line, mixed with the intake air and burned during For example: 95 RON equals 90 CLC or AKI normal combustion. Maintenance, Car Care 217

owners manual Porsche Carrera 911

owners manual Porsche Carrera 911 - year of production: 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 - Porsche Carrera 911 997 owners manual EN