What kind of oil goes in 92 Buick Skylark?

The type of oil for a 1992 Buick Skylark depends on the engine it has. Buicks of that year came with several different engines. To know for sure, you need to check your owner's manual or the sticker under the hood (often located near the radiator or on the oil filler cap).

That said, most likely, it will call for either:

* SAE 10W-30: This is a common viscosity for older engines, and a good starting point if you don't know the specific engine.

* SAE 5W-30: This is another common viscosity and might be recommended, especially if you live in an area with colder winters.

Important Considerations:

* API Certification: Look for an oil that meets the API (American Petroleum Institute) service classification recommended in your owner's manual. This will typically be something like "SF," "SG," or possibly higher (SJ, SH, etc.). Older engines often have less stringent requirements. The owner's manual is the best place to confirm.

* Synthetic vs. Conventional: You can use either synthetic or conventional oil, but synthetic oil generally lasts longer and offers better protection at both high and low temperatures. Again, check your owner's manual for any recommendations.

Without knowing the specific engine in your 1992 Buick Skylark, this is the best general advice. Please consult your owner's manual for definitive information.