If 91 fuel can potentially gain more horsepower, does 93 fuel make a bigger difference?

[ibu66]

My dad is a chemical engineer, so I will always remember his words: put the gas that is suggested by the manufacturer. Whatever number appears on your manual, use that one. The engine was designed to operate with that octane. Going higher than recommended will be like a placebo effect?. But this is just me!

Sponsored

 

[HVLA]

There are plenty of scientific type websites out there that say the exact opposite of what that video said. You have to take that with a grain of salt, the engineers at Toyota specified what to put in the vehicle and they designed it for that fuel. Minor horsepower gains are not worth the trouble and there's no reason to pay hundreds of dollars extra a year for a small horsepower gain that you probably won't even feel. I had a Volkswagen golf a while back that showed two different horsepower levels with regular fuel and premium and it was designed for that. Driving it I couldn't tell any difference although it probably would show up on a dyno. I mean it's your money.

20 hp is not a minor gain. Especially for $6 a fill up.