1995 GMC Yukon Owner's Manual - Page 286

You should ask your service station operators if their gasolines contain deposit control additives and oxygenates, and if they have been reformulated to reduce vehicle emissions. Diesel Fuel Requirements Fuel System and Some states and provinces have restrictions on the purchase of diesel fuel for light-duty vehicles and require you to buy permits or pay special taxes. Some of these restrictions apply only to residents, and others apply to both residents and visitors. These restrictions can change. To learn the current restrictions in any state or province, contact your auto club, the police or other officials. Fuel Requirements NOTICE: Diesel fuel or fuel additives not recommended in this manual could damage your fuel system and engine. Your warranty wouldn't cover this damage. And: 0 Diesel fuel that has been mixedwith engine oil could damage your engine and emission controls. Always check with your service station operator to make sure his diesel fuel has not been mixed with engine oil. If you ever run outof diesel fuel, it canbe difficult to restart your engine. "Running Out of Fuel," later in this section, tells To you how to get it started again. avoid all this, try never to let your tank get empty. What Fuel to Use For best results, use Number 2-D diesel fuel year-round (above and below freezing conditions) asoil companies blend Number 2-D fuel to address climate differences. Number I-D diesel fuel may be used in very cold temperatures (when it stays below 0°F or -1 8°C); however, it will produce a power and fuel economy loss. The use of Number 1-D diesel fuel in warm or hot climates may result in stalling, poor starting when the engine is hot and may damage the fuel injection system. Diesel fuel may foam when you fill your tank. This can cause the automatic pump nozzle to shut off, even though your tank isn't full. If this happens, just wait for the foaming to stop and then continue to fill your tank. 6-4