Important Considerations:
* This is a general guideline. The actual optimal timing can vary slightly depending on the condition of the engine, altitude, and fuel used.
* Consult your owner's manual: The most accurate timing specification will be found in your vehicle's owner's manual.
* Professional timing adjustment: Timing adjustments should ideally be done by a qualified mechanic using a timing light. Improper timing can damage your engine.
* Engine wear and tear: As an engine ages, the optimal timing might change slightly. A mechanic can assess this during a tune-up.
It's crucial to use a timing light to accurately set the timing. Simply setting it based on a number without a timing light will likely be inaccurate. Don't attempt this without the proper tools and knowledge.