Gas mileage

[Blown R/T]

I passed at least 3 speed checks on the trip. and they were with in 1 mph ar 65 mph. so I believe it to be very accurate.
Kevin

 

[glhcarl]

My new in 69 RR: 383/727, 3.23, PS & PB, got 12 to 14 mpg around town and 16 to 17 mpg on the highway using 104 octaine 1969 gas.

My current 69 RR: 383/727. 3.23 gets 9 to 11 mpg around town and 11 to 12 mpg on highway using 93 octaine 2009 gas.

Octaine down 11% but mileage down 25% think there is any connection?

 

[Roadcuda]

My new in 69 RR: 383/727, 3.23, PS & PB, got 12 to 14 mpg around town and 16 to 17 mpg on the highway using 104 octaine 1969 gas.

My current 69 RR: 383/727. 3.23 gets 9 to 11 mpg around town and 11 to 12 mpg on highway using 93 octaine 2009 gas.

Octaine down 11% but mileage down 25% think there is any connection?

That's a trick question. Right? They keep talking about making cars that get better gas mileage, but then keep pushing gas blends that give less mileage. :huh: That just don't add up! An oxymoran if I ever saw one.