shorty
Full Access Member
As most here know we old men are a little slow. In the Dallas area we get 93 octane for our trucks. Driving west to Abilene the max octane is 92 and by the time I get to Midland Texas it is 91 and at some stations it is only 90. I asked a number of people but got no answer. :dontknow: Last week I asked my son, the private pilot, and he said sure he knew why. I thought, oh yeah, here we go. He said when flying as one gains altitude he has to lean out the fuel mixture. Dallas is 430’ and Midland is 2,782’ about sea level. Duh, our engines, as well as any other, need to be leaned out as altitude increase and rather than incorporated that into our computers the "greedy" ole oil companies refine the gas leaner as the altitude increases. Yah, I could have Googled it but as I said, I am a little slow. I’m guessing Caveman is running 50 octane where he lives. :dontknow: