1995 Buick Park Avenue Owner's Manual - Page 236

As shown in the chart, SAE 1OW-30 is best for your vehicle. However, you can use SAE 5W-30 if it's going to be colder than 60"F (I 6 O C) before your next oil change. When it's very cold, you should use SAE 5W-30. These numbers on an oil container show its viscosity, or thickness. Do not use otherviscosity oils, such as SAE 2OW-50. Engine Oil Additives v Don't add anything to your oil. Your Buick dealer is ready to advise if you think something should be added. When to Change Engine Oil See if any one of these is true for you: i I NOTICE: I I Use only engine oil with the American Petroleum Institute Certified For Gasoline Engines "Starburst" symbol. Failure to use the proper oil can result in engine damage not covered your by warranty. - I I 0 Most trips are less than 5 to 10 miles (8 to 16 km). This is particularly important when outside temperatures are below freezing. Most trips include extensive idling (such as frequent driving in stop and go traffic). 0 0 Most trips are through dusty areas. frequently tow a trailer or use a carrier on top of your car. YOU GM Goodwrench@oil (in Canada, GM Engine Oil) meets all the requirements for your vehicle. If any one of these is true foryour vehicle, then you need to change your oil and filter every 3,000 miles ( 5 000 km) or 3 months -- whichever comes first. (See "Change Oil Soon" in the Index.) 6-16