The Lexus EX350, a luxury crossover SUV, necessitates premium unleaded gasoline with an octane rating of 91 or higher. This fuel is specified by the manufacturer to ensure optimal engine performance and longevity.
Utilizing the recommended fuel grade in the EX350 contributes to a smoother running engine, efficient combustion, and preservation of the vehicle’s emission control systems. Historically, premium fuel has been associated with vehicles employing high-compression engines or forced induction systems, where its resistance to pre-ignition is crucial. The specified fuel contributes to minimizing the risk of engine knocking or pinging, potentially preventing long-term damage.
