* Conventional oil: A less expensive option, but needs to be changed more frequently. The weight (e.g., 5W-30, 10W-30) will be specified in your owner's manual.
* Synthetic blend oil: A compromise between conventional and fully synthetic, offering better performance than conventional oil but at a lower cost than fully synthetic. The weight will again be specified in your owner's manual.
* Fully synthetic oil: The most expensive option, but offers the best performance and longest lifespan between changes. The weight will be specified in your owner's manual.
Crucially: The owner's manual will specify the *weight* of the oil (like 5W-30 or 10W-40) and the API certification (like SM, SN, or SP - newer is generally better). Do not rely on general advice; consult your owner's manual. Using the wrong oil can damage your engine.