2008 Cadillac Escalade EXT Owner's Manual - Page 461

Hood and Liftgate Support Gas Strut Service Visually inspect gas strut for signs of wear, corrosion, cracks, loss of lubricant, or other damage. Check the hold open ability of gas strut. If necessary, replace with genuine parts from your dealer/retailer. Recommended Fluids and Lubricants Fluids and lubricants identified below by name, part number, or specification can be obtained from your dealer/retailer. Usage Fluid/Lubricant The engine requires a special engine oil meeting GM Standard GM4718M. Oils meeting this standard can be identified as synthetic, and should also be identified with the American Petroleum Institute (API) Certified for Gasoline Engines starburst symbol. However, not all synthetic API oils with the starburst symbol will meet this GM standard. Look for and use only oil that meets GM Standard GM4718M. For the proper viscosity, see Engine Oil on page 5-14. Underbody Flushing Service At least every spring, use plain water to flush any corrosive materials from the underbody. Take care to clean thoroughly any areas where mud and other debris can collect. Engine Oil 50/50 mixture of clean, drinkable water and use only DEX-COOL® Engine Coolant Coolant. See Engine Coolant on page 5-24. 6-13