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What type of oil do you put in a Oldsmobile Aurora?

The Oldsmobile Aurora's recommended oil type depends on the year of manufacture. You must check your owner's manual for the precise specification. However, generally speaking, Oldsmobile Auroras (produced from 1999-2003) typically called for:

* 5W-30 or 10W-30 conventional or synthetic motor oil.

Crucially: The owner's manual will specify the *exact* viscosity (like 5W-30 or 10W-30) and any API certification requirements (like SM, SL, or SN - these letters indicate the oil's performance standards and have changed over the years). Using the wrong oil can damage your engine. Always consult your owner's manual.