Comprehensive Test Regular vs Premium

dibbons said
Granted, the testing may be flawed, I think they found data they already had decided to prove a point with.

Let's see some quarter mile ET's regular vs premium.

Good note. Not covered by the reporter. Which isn’t a surprise. The net work itself probably has a time limit in investigative reporting and a limit on what is going to be presented.

The test between 87 & 91/93 on a drag strip test would be for that car only considering the wide and varied perameters for that and vs other engines.

I can’t find a difference between the recommended 89 & my use of 87 on my ‘18 Ram 5.7. So 87 goes in.

Dana67Dart said
At 5:40 the dyno is showing 6 Hp "just to turn the wheels" ( regular or premium) isn't that the HP to turn the dyno IE the load on the dyno is 6HP just freewheeling or that is the minimum load the dyno can load up.

Is it just me or did the tech say that the engine would be more "Proficient" on premium.

An engine that has a knock sensor should be more efficient with a higher octane assuming the lower octane would create a ping situation.

Thoughts?

On modern cars, the m with the reporter. Use ‘87. On our cars that are well modified, it would depend on a ton of factors and the level of modifications made.

A few fellas here have claimed running a lower than what I would recommend octane in the high compression engines. If it works, run with it. If it pings, go back upwards. It’s really that simple.

On power required to maintain 50-60 or 70 mph, it was never ever much. Everything else after the few scant HP needed to maintain speed is heavy for passing cars or getting on the Hwy quickly.