Premium Fuel Required

So I was watching a YouTuber video and screen shot this:

I wonder which is it? Driver manual says recommended and this says required. I plan to run premium fuel nevertheless.

 

[supersix]

Interesting. According to the manual, the new Tundra with the same engine recommends using 87 octane fuel.

 

[Flipside909]

So I was watching a YouTuber video and screen shot this:
View attachment 230

I wonder which is it? Driver manual says recommended and this says required. I plan to run premium fuel nevertheless.

Twin Turbo V6, computer is tuned to use 91 Octane (Premium) Mininum. This isn’t a Tundra, don’t worry about their requirements for fuel.

 

[supersix]

I'm all for running premium fuel for extra performance if the vehicle is tuned for it.

It's odd the Tundra which is tuned to run 87 octane would have more horsepower:

2024 Tundra - 3.5L Twin-Turbo V6 Produces 389 hp, 479 lb-ft
2024 GX550 - 3.5L Twin-Turbo V6 Produces 349 hp, 479 lb-ft

 

[MLMartin]

I wonder if they changed the programming of the ECU and figured they would sell more Tundra's with the 87 gas vs requiring 91 and losing sales.

 

[Lord Helmet]

I'm all for running premium fuel for extra performance if the vehicle is tuned for it.

It's odd the Tundra which is tuned to run 87 octane would have more horsepower:

2024 Tundra - 3.5L Twin-Turbo V6 Produces 389 hp, 479 lb-ft
2024 GX550 - 3.5L Twin-Turbo V6 Produces 349 hp, 479 lb-ft

I heard all types of rumors: different trim on the turbos, tuned for longevity, not taking sales of LX600, etc... I figure we will know once the head engineer explains it one of these days.

 

[Critmonkey]

ehh just put the highest octane in your area if you can afford it. In California we mostly cap at 91. If you're in other regions just look for 93 and above. Just dont put 110 in it lol.

 

[DeltaPapa]

I'm all for running premium fuel for extra performance if the vehicle is tuned for it.

It's odd the Tundra which is tuned to run 87 octane would have more horsepower:

2024 Tundra - 3.5L Twin-Turbo V6 Produces 389 hp, 479 lb-ft
2024 GX550 - 3.5L Twin-Turbo V6 Produces 349 hp, 479 lb-ft

The 2024 GX550 engine is a 3.4L engine.

 

[F90Guy]

I'm all for running premium fuel for extra performance if the vehicle is tuned for it.

It's odd the Tundra which is tuned to run 87 octane would have more horsepower:

2024 Tundra - 3.5L Twin-Turbo V6 Produces 389 hp, 479 lb-ft
2024 GX550 - 3.5L Twin-Turbo V6 Produces 349 hp, 479 lb-ft

The tundra comes with bigger turbos, so tuned for a bit more boost hence a bit more power. I thought that the LX600 also has the same engine as the Tundra with bigger turbos, but car care nut said its the same as the GX. Which I think he is mistaken, both LX and Tundra have bigger turbos then the GX.

Of course the LX will have to make more power being a flagship vehicle. Just like back in the day LX470 made more power than GX470, they had identical engines.

 

[F90Guy]

The 2024 GX550 engine is a 3.4L engine.

They're all 3.4L TT, 3.5 seems to be a common "marketing" typo. All these vehicles have V35A which is 3445 cc. In hybrid version it makes 409hp