-> I owned a tweaked Pontiac that had to use either Shell premium
-> or Sunoco 260 to avoid puffing black smoke out the exhaust.
-> THAT was expensive at 10 mpg!

Ouch, my Coupe DeVille got 14 city and 17 highway and it was a 429
engine.
Worst motorcycle got 33 - 34 MPG and was a tweaked XS-1100
Yamaha Special.

Saint Pete to Daytona required THREE fillups and it was dicey
getting to the truck stop at 27 on the way back.
Reserve was a piddling 12 miles. 
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