We Tested 87, 91 & 93 Octane In The Same Toyota 4Runner — One Clear Winner!

We tested 87, 91, and 93 octane fuel back to back in the same Toyota 4Runner under real conditions including city driving, highway cruising, and a loaded grade pull, and the results were not what I expected. Your owner's manual says 87 is acceptable, but acceptable and optimal are two very different things. The 4Runner's 1GR-FE V6 uses a knock sensor that constantly retards ignition timing on lower octane fuel to prevent detonation, and every timing retard event costs you power, efficiency, and long term engine health. One fuel grade delivered a clear measurable advantage in every single test condition. If you tow, haul, go off road, or simply want your 4Runner running the way it was engineered to run, this video will change what you put in your tank. ► SUBSCRIBE:    / @everythingtoyota4x4   #ToyotaMaintenance #ToyotaMechanic #ToyotaCare #ToyotaOwners Ready to get the most out of your Toyota 4x4? We share easy-to-follow maintenance tips, DIY repair guides, and essential upkeep to help you avoid costly mechanic bills. Alongside these step-by-step guides, we also break down the best new and used Toyota 4x4 models worth buying so you can make a smart choice for your next vehicle. Subscribe now to take control of your Toyota’s health and stay informed on the best models to own!