2007 Volvo S40 Owner's Manual - Page 115

These may include: standing upwind away from the filler nozzle while refueling 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. 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 your retailer for correction. Use of Additives With the exception of fuel 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. Fuel filler door Press the button on the light switch panel (see the illustration on page 58) with the ignition switched off to unlock the fuel filler door. Please note that the fuel filler door will remain unlocked until the vehicle begins to move forward. An audible click will be heard when the fuel filler door relocks. 127 06 Starting and driving Fuel requirements If you intend to leave your vehicle while it is being refueled, this feature enables you to lock the doors/trunk while leaving the fuel filler door unlocked. You can also keep the vehicle locked if you remain inside it during refueling. The central locking button does not lock the fuel filler door. Be sure the fuel filler door is not obstructed and is completely closed after refueling. Open the fuel filler cap slowly during hot weather. Refueling The fuel tank is designed to hold approximately 15.9 US gallons (60 liters) 1 with sufficient volume left over to accommodate possible expansion of the fuel in hot weather. Be aware that the "usable" tank capacity will be somewhat less than the specified maximum. When the fuel level is low, such factors as ambient temperature, the fuel's "Reid vapor pressure" characteristics, and terrain can affect the fuel pump's ability to supply the engine with an adequate supply of fuel. Therefore, it is advisable to refuel as soon as possible when the needle nears the red zone, or when the fuel warning light comes on. 1 Models with All Wheel Drive have a tank volume of 15 US gallons (57 liters). Models with engine code 39 have a fuel tank capacity of 14 US gallons (53 liters). This code is the 6th and 7th digits from the left in your vehicle's VIN number. See page 227 for the location of the VIN plate.