What oil does a 1994 Chevrolet S-10 blazer use?

The 1994 Chevy S-10 Blazer's oil type depends on the engine it has. You'll need to check your owner's manual for the specific recommendation. However, generally speaking, these engines likely called for:

* SAE 10W-30: This was a common viscosity grade for that era.

* SAE 5W-30: Might also be acceptable, especially in colder climates.

Crucially: The owner's manual will specify the *correct* oil type and weight for your *specific* engine. Using the wrong oil can damage your engine. Look for the sticker under the hood or find the owner's manual online if you don't have it.