Once you have the engine code, you can:
* Consult your owner's manual: This is the most reliable source. It will specify the recommended oil type (conventional, synthetic blend, or full synthetic) and viscosity (e.g., 5W-30, 10W-40).
* Use an online lookup tool: Many websites allow you to enter your vehicle's year, make, model, and engine code to find the recommended oil. However, always double-check with your owner's manual.
Do not guess. Using the wrong oil can seriously damage your engine.