The operational fuel specification for Lexus GX vehicles is a frequent inquiry among owners and prospective buyers. Understanding the manufacturer’s recommendation regarding fuel grade is crucial for optimal engine performance and longevity.
Utilizing the specified fuel grade can contribute to maintaining the vehicle’s designed power output and fuel efficiency. Deviation from the recommended fuel type may, in certain circumstances, impact engine performance and potentially affect the vehicle’s emissions control systems. Historically, luxury vehicles have often been designed to leverage the benefits of higher octane fuels.