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What type of engine oil should be used in a 5.7 hemi engine?

The recommended oil type for a 5.7 Hemi engine depends on the year of the vehicle and the specific recommendations in your owner's manual. However, generally speaking, Chrysler recommends using an oil that meets the following specifications:

* API SN Plus, SN, or SM (API is the American Petroleum Institute classification) Newer vehicles often specify SN Plus which offers improved protection against low-speed pre-ignition (LSPI).

* Viscosity: The viscosity grade (like 5W-20, 5W-30, 10W-30) will also be specified in your owner's manual. This is crucial and choosing the wrong viscosity can severely damage your engine. Check your owner's manual; 5W-20 is common in many newer Hemi engines, but older ones might specify 5W-30 or 10W-30.

Do not rely solely on this information. Always consult your owner's manual for the specific oil type and viscosity recommended by the manufacturer for your particular year and model of vehicle. The manual will give you the exact specifications to ensure optimal engine performance and longevity.