My best MPG is 17.2.
That's nearly all freeway driving @ 65mph+.
I run 87 Octane.
No mods on the VX.
My engine has 145K on it now.
I use 5w 30 Royal Purple oil and it's changed within every 5K miles max. As often as 3K.
I ran Michelin summer tires (Latitude Sport IIRC) @ 35psi during my MPG checks.
Air Filter was new during the MPG checks.
No tune-ups in the past 50K.
*EDIT : Also, I only drive using the Power Drive selector.
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