Premium Gas, 91 Octane

93. Cause out here in Cowtown, it's 87, 89, or 93.
We cant get any of that fancy gas here - it's too powerful and dangerous. We get 91 and we'll like it as Judge Smails says.
 

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Tundra makes more power and specs 87. GX makes less power and specs 91.

We're running 93 because I haven't read anything definitive about why this is the case, although looking at older models which use the same engine across the board (looking at V8's and 3.5's) Lexus tends to call for 91 while Toyotas are ok with 87. I get it, the GX reportedly has smaller turbos which makes sense as the Tundra's peak HP and Torque numbers are 400 RPM higher in the rev range versus the GX.

I know even less about the LX other than it lists even more peak HP, but with the same peak torque at the same RPM as the GX. I'm very interested in how Toyota is getting away with more advertised numbers with less octane and larger turbos.

Once the warranty is up, I'm going to look at aftermarket tuners to increase the boost and make use of the additional octane.
 

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