2008 Cadillac STS Owner's Manual - Page 458

Engine Coolant Level Check Check the engine coolant level and add DEX-COOL® coolant mixture if necessary. See Engine Coolant on page 5-25. At Least Once a Month Tire Inflation Check 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 5-66. Check to make sure the spare tire is stored securely. See Changing a Flat Tire on page 5-96. 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 5-25. 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 5-73. Windshield Washer Fluid Level Check Check the windshield washer fluid level in the windshield washer fluid reservoir and add the proper fluid if necessary. See Windshield Washer Fluid on page 5-40. 6-10