Fuel for Gx460? Regular or hi-octane

[Sultan]

I have a 2022 GX460.

other than performance, what pro/cons are there between premium vs regular fuel?

is either more economical on consumption?

any long term benefits of hi-octane?

 

[RX400h]

The key is in the owner's manual wording. Is 91 octane fuel recommended or required? If it is required, you should not use anything else. If a safeguard like a knock sensor malfunctions, the result could be engine damage. Costco has good fuel prices for premium. That's what I use in two of my cars that require that grade.

[Kike_GX460]

I recently purchase a GX 2019 with 36k miles on it, I also use costco fuel, is working out ok. I’m averaging 17.8 per gallon suburban City driving. Always on eco mode and shifting to S mode if high rise bridge or road.

[dcfish]

I burn only the highest octane that is available, Usually 91 here. I never use anything else, Nor would I...Not even in my lawn mower  😉