2007 Cadillac STS Owner's Manual - Page 513

At Each Fuel Fill It is important to perform these underhood checks at each fuel fill. Windshield Washer Fluid Level Check Check the windshield washer fluid level in the windshield washer fluid reservoir and add the proper fluid if necessary. Engine Oil Level Check Check the engine oil level and add the proper oil if necessary. See Engine Oil on page 380 for further details. Notice: It is important to check the engine oil regularly and keep it at the proper level. Failure to keep the engine oil at the proper level can cause damage to the engine not covered by your warranty. At Least Once a Month Tire Inflation Check Visually inspect your vehicle's tires and make sure they are inflated to the correct pressures. Do not forget to check the spare tire. See Inflation - Tire Pressure on page 431. Check to make sure the spare tire is stored securely. See Changing a Flat Tire on page 464. Engine Coolant Level Check Check the engine coolant level and add DEX-COOL® coolant mixture if necessary. See Engine Coolant on page 389 for further details. Tire Wear Inspection Tire rotation is recommended if your vehicle has the same size tires at all four wheel positions and may be required for high mileage highway drivers prior to the Engine Oil Life System service notification. Check the tires for wear and, if necessary, rotate the tires. See Tire Inspection and Rotation on page 438. Intercooler Coolant Level Check (4.4L Supercharged Engine) Check the coolant level and add DEX-COOL® coolant mixture if necessary. See Engine Coolant on page 389 for further details. 513