1993 Cadillac DeVille Owner's Manual - Page 285

S A E 1OW-30 As shown in the viscosity chart, SAE 1OW-30 isbest for your vehicle. However, you can use S A E 5W-30 if it's going to becolder than 60°F (16°C) before your next oil change. When it's very cold, below O°F (-18"C), you should use SAE 5W-30. These numberson an oil container show its viscosity, or thickness. Do not use other viscosity oilssuch as SAE1OW-40 or SAE 20W-50. Energy Conserving I1 Oils with these words on the container will help you save fuel. This doughnut-shaped logo (symbol)is used on most oil containers to help you select the correct oil. You should look for this on the oil container, and use only those oils that display the logo. GM Goodwrench@oil (in Canada,GM Engine Oil) meets all the requirements foryour vehicle. Engine Oil Additives: Don't add anything to your oil. Your Cadillac dealer is ready to advise if you think something should be added. When to Change EngineOil: Your vehicleis equipped with an Engine Oil Life Index (EOLI) feature. Oil change intervals are determined by the EOLI and will usually fallat, orbetween, the two recommended alternative intervals of 3,000 miles (5,000 kilometers) and 7,500 miles (12,500 kilometers), butcould be shorter than 3,000 miles (5,000 kilometers) under some very severe driving conditions shown in Schedule I. The system will also indicate theneed for an oil change if 7,500 miles (12,500 kilometers) has been driven. Engine oil life remaining is displayed through the Fuel Data center and as a "CHANGE OIL SOON" light. The Fuel Data center display includes a number between 0 and 100. This is the percentage of oil life REMAINING based on driving conditions and mileage driven since the last time the oil life indicator was reset. The EOLI will not detectexcessively dustyconditions or engine malfunctions which may effect the oil. If you drive in dusty areas, change the engine oil after every 3,000 miles (5,000 kilometers) or 3 months (whichever comes first), unless instructed to do so sooner by the EOLI. 272