The specified lubricant for the 2018 Toyota RAV4 is a synthetic blend, typically SAE 0W-20 or 5W-20, depending on the specific engine and operating climate. Using the correct grade ensures optimal engine performance and longevity. For instance, utilizing a heavier grade than recommended could negatively impact fuel efficiency and cold-start performance.
Adhering to the manufacturer’s recommended fluid specifications is crucial for maintaining warranty coverage and maximizing engine lifespan. The viscosity grade plays a significant role in protecting engine components from wear and tear under various operating conditions. Historically, oil formulations have evolved to provide superior protection and efficiency compared to older, conventional oils.