VX Fuel

[Clyde]

I Use 93 Octane With Power Mode On All The Time And I Get The Best Mileage This Way.and The Vx Performs Much Better.

I'm with Willy on the power mode on all the time. I have noticed the same thing....that my gas mileage improves when I leave the power mode on. Although I differ with Willy in that I use regular 87 octane. I can't tell a difference by using the higher octane in my VX.

[Y33TREKker]

There are too many variables involved to be able to say what will provide the best mileage for everyone; driving style, local terrain, local climate, wheels and tires, overall vehicle weight, engine configuration (super-charged), etc, so what ends up providing the best mileage for each different owner will just be a matter of trial and error .

The stock compression ratio for the VX's 3.5L is 9.1:1, so anything above 87-89 octane really wouldn't be necessary/beneficial. Higher octane fuels burn slower so that they don't pre-detonate in higher compression engines, like most motorcycles that run around 10:1 or 11:1. That's usually what the fuel octane recommendations listed in the vehicle owners' manual are based on.

Depending on when it was changed last, you might also try replacing the air filter when checking all the other maintenance items listed already.

[PHO2GR4]

As dumb as it sounds, the VX roof racks also decrease mileage.

Wahhhhhhhh!