What mileage does your slant six powered ride get?

Stone cold stock 1964 Valiant V-100. 1964 Mobile Economy Run from LA to NYC, average 23.0851 mpg over 3,243.8 miles. Combination city and Highway. Easily mid to upper 20's if not 30+ mpg cruising steady on a flatish highway.

https://www.hsmichigan.org/wp-content/uploads/2012/08/Mobil

That's what I'm talking about! Chrysler cars always kicked *** in the Mobil economy runs.

Of course, if you know anything about Chrysler engineers you KNOW they studied, tested, and honed their techniques. Give them a challenge and they came out in top. From what I remember they accelerated to the speed limit quickly but not enough to waste gas. IIRC, there was an official observer in the cars to check for cheating.

But at least one time they put a ball bearing in the ash tray and used it as an inclinometer.
Our old cars had, and still have, an advantage due to those anal-retentive engineers.