What type of oil do you put in a 2.8L 88 Chevy Celebrity?

For a 1988 Chevy Celebrity with a 2.8L engine, it's recommended to use 10W-30 motor oil for optimal performance in a variety of temperatures. In colder climates, you might consider using 5W-30 for better cold start performance. Always check the owner's manual for specific recommendations and ensure the oil meets the necessary API specifications.