Sultan Posted February 2 Share Posted February 2 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? Quote Link to comment Share on other sites More sharing options...
RX400h Posted February 2 Share Posted February 2 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. 1 Quote Link to comment Share on other sites More sharing options...
Kike_GX460 Posted March 14 Share Posted March 14 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. 1 Quote Link to comment Share on other sites More sharing options...
dcfish Posted March 15 Share Posted March 15 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 😉 1 Quote Link to comment Share on other sites More sharing options...
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