I'm confused by the statement that one would never notice any difference between 91 and 87 octane fuel unless you are running the engine about 4,000 RPM.
Isn't the torque at 2,000 RPM for 91 octane almost three times that of 87 octane? And about double at 3,000 RPM?
How can one not notice more torque?
Isn't the torque at 2,000 RPM for 91 octane almost three times that of 87 octane? And about double at 3,000 RPM?
How can one not notice more torque?