That said, a good starting point is to look for 10W-30 oil that meets the specifications listed in your owner's manual. This viscosity is often recommended for older vehicles like your Dakota, providing good protection in a range of temperatures. The manual might also specify an oil meeting a particular API (American Petroleum Institute) service classification, such as SF, SG, SH, SJ, or SL. Newer classifications (SM, SN, SP, etc.) are generally backward compatible, but using an oil that *specifically* meets the older classification called for in your manual is best.
Before changing your oil:
* Consult your owner's manual: This is the most crucial step. The manual will give you the exact specifications for your engine, including oil type, viscosity, and API service classification.
* Check the oil fill cap: Sometimes, the recommended oil type is printed on the cap itself.
Using the wrong oil can damage your engine, so always refer to the manufacturer's recommendations. If you can't locate your owner's manual, you can often find a digital copy online through the Dodge/Chrysler website or a reputable automotive parts website.