* SAE Viscosity Grade: 10W-30 or 5W-30 (if available)
* API Service Classification: SG, SH, or SJ
In addition to these recommendations, Toyota also provides the following tips for choosing the right motor oil for your 1989 Celica:
* Use only genuine Toyota motor oil or equivalent high-quality motor oil that meets the API Service Classification SG or SH.
* Avoid using motor oils that contain friction modifiers, as they can cause damage to the engine.
* Change the motor oil and oil filter every 5,000 miles or 6 months, whichever comes first.
By following these recommendations, you can help keep your 1989 Toyota Celica running smoothly for many years to come.