2006 Saab 9-2X Owner's Manual - Page 250

11-12 Maintenance and service eas with very high temperatures, or used for heavy-duty applications such as towing a trailer, use of oil with the following grade and viscosities is recommended. API classification SM (or SL): SAE viscosity no.: 30, 40, 10W-50, 20W-40, 20W-50 Cooling system — Do not splash the engine coolant over painted parts. The alcohol contained in the engine coolant may damage the paint surface. ¢ Synthetic oil You can use synthetic engine oil that meets the same requirements given for conventional engine oil. When using synthetic oil, you must use oil of the same classification, viscosity and grade shown in this owner's manual, and must follow the oil and filter changing intervals shown in the maintenance schedule. Never attempt to remove the radiator cap until the engine has been shut off and has cooled down completely. Since the coolant is under pressure, you may suffer serious burns from a spray of boiling hot coolant when the cap is removed. ¢ Cooling fan, hose and connections Your vehicle employs an electric cooling fan which is thermostatically controlled to operate when the engine coolant reaches a specific temperature. If the radiator cooling fan does not operate even when the engine coolant temperature gauge exceeds the normal operating range, the cooling fan circuit may be defective. Check the fuse and replace it if necessary. If the fuse is not blown, have the cooling system checked by your Saab dealer. If frequent addition of coolant is necessary, there may be a leak in the engine cooling system. It is recommended that the cooling system and connections be checked for leaks, damage, or looseness. — The cooling system has been filled at the factory with a high quality, corrosion-inhibiting, yeararound coolant which provides protection against freezing down to -33°F (-36°C). For adding, use genuine Saab coolant or an equivalent: a mixture of 50% soft water and 50% ethylene-glycol basis coolant. Use of improper coolants may result in corrosion in the cooling system. It is important to maintain protection against freezing and corrosion, even if freezing temperatures are not expected. Never mix different kinds of coolant.