Gen 2 Gas Millage

[RaptorMaryland]

Not a scientific test but for the first 2298 miles I ran Premium Fuel, tire pressure set to 40 PSI, result was 18.5 MPG all Highway miles on a trip from Maryland to Michigan and back.



Then I went to Regular Fuel (2298 miles to 4284 Miles) and set tires to 37 PSI, result was 18.4 MPG all Highway miles on a trip from Maryland to Atlanta and back.




So I ran 2,000 miles on both fuels and at Highway (70 Plus speeds) got the same Millage in effect.

 

[SilverBolt]

Take your total miles and divide by the total gallons used. It will be different. I just did a 1500+ mile trip. Truck said 19.xx and the actual number was 18.1.

 

[smurfslayer]

My speedometer reads 2 mph high. and the thermometer is 3 degrees off ambient.

we could go on and on, they’re all just approximations, including the distance to empty and mpg. OP said it was unscientific, and it was.

 

[Sasha4]

Im seeing those numbers with shorter runs but mainly highways with 87 octane. Local stuff nets me around 13-14. If your cruising and hit the go pedal, It drops a lot faster than it climbs LOL. Was wanting to see if the difference of super versus regular warrants to expense and it seems thats its not.

 

[Ocean18]

What is your average speed on the highway? I'm at about 16mpg right now going about 75-80 consistently.

 

[RaptorMaryland]

What is your average speed on the highway? I'm at about 16mpg right now going about 75-80 consistently.

Most Freeways allow 70

Even running Waze to spot speed traps, there are so many unmarked cars I lock my Cruse control at 76.

 

[Gsteve]

Mpg drops fast after 65 mph

 

[Robtor310]

91 oct
70/30 freeway/street
38psi
16.4MPG

 

[RaptorMaryland]

91 oct
70/30 freeway/street
38psi
16.4MPG

I agree, my data was around 90/10 freeway/street

But I see no reason to buy 91 after this test, if my driving is freeway.

 

[taco-13]

93 oct
50/30/20 Highway/city/beach
38 psi onroad
14.5 mpg