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Cargo Master
Joined: Nov 2020
Posts: 2,073
Likes: 1,027
From: Michigan
I can't believe in this day and age there isn't a national standard. The lowest octane is 87 on up to 94, then your 104 true blue. I saw 85 octane all over. One pump in texas was 100% gas, so I pumped in 91, and Wow! Great mileage and power. Exactly what should happen. A stretch from rotan, new Mexico to denver on I 25, I was getting 15.6 mpg at 65 mph pulling the loaded trailer. Mind you that was with 4.30 gears.... In iowa, flat i80, 8.7 mpg......
Senior User
Joined: Jun 2020
Posts: 179
Likes: 6
From: Gretna, NE
I can't believe in this day and age there isn't a national standard. The lowest octane is 87 on up to 94, then your 104 true blue. I saw 85 octane all over. One pump in texas was 100% gas, so I pumped in 91, and Wow! Great mileage and power. Exactly what should happen. A stretch from rotan, new Mexico to denver on I 25, I was getting 15.6 mpg at 65 mph pulling the loaded trailer. Mind you that was with 4.30 gears.... In iowa, flat i80, 8.7 mpg......
More Turbo
Joined: Oct 2010
Posts: 594
Likes: 42
From: fly-over country
I can't believe in this day and age there isn't a national standard. The lowest octane is 87 on up to 94, then your 104 true blue. I saw 85 octane all over. One pump in texas was 100% gas, so I pumped in 91, and Wow! Great mileage and power. Exactly what should happen. A stretch from rotan, new Mexico to denver on I 25, I was getting 15.6 mpg at 65 mph pulling the loaded trailer. Mind you that was with 4.30 gears.... In iowa, flat i80, 8.7 mpg......
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SuperDutyScaler
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Jan 7, 2013 12:17 AM
