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What kind of oil does a 1991 dodge stealth es use?

The 1991 Dodge Stealth ES, depending on the engine, requires different oil types. You'll need to check your owner's manual for the exact specification, but generally:

* If it has the 3.0L V6: This engine likely called for 10W-30 or 5W-30 oil meeting the API service classification of SG, SH, or SJ at the time. Modern equivalents would be 5W-30 or 10W-30 meeting SN or SN Plus.

* If it has the turbocharged 3.0L V6: This engine usually had more stringent requirements. Consult your owner's manual to be certain, but it likely recommended a higher-quality oil such as a synthetic blend or full synthetic, and potentially a higher viscosity, such as 10W-40 or even 20W-50 depending on climate and driving conditions. Again, check the manual for the specific API service classification.

Crucially: Always check your owner's manual. The manual will provide the most accurate and up-to-date information for your specific vehicle. Using the wrong oil can damage your engine.