Going from 1165 to 5300. I remember something about changing octane, I'm currently runnin 93, keep it, drop it, or boost it?
Gas @ Altitude
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According to our BG products guy, the need for higher octane diminishes the higher you go. I'm not going to get into that whole debate, but I've never experienced pinging or degraded performance using regular and I live at 8,600 feet.
You can't even get 93 here in utah... 4000 Avg. altitude. 85 works just fine. If you have High temps like 90+ days and you run the AC I would use 87 or 91 if I am towing.
The basic science behind octane is at sea level there is more oxygen and gas is what keeps oxygen under control (among other things)... so with more o2 and a high compression motor you need more fuel and higher octane to help control the burn. At high altitude 5000 feet for example there is less o2. Thats way in utah 93 is not premium gas it is 91.
I had gas at altitude once...that was a plane full of pissed off people. 
Other than a bad joke, I have nothing more to contribute to this thread. I live in Florida and my house elevation is 4' below sea level, so high altitude to me means standing on a curb.
Other than a bad joke, I have nothing more to contribute to this thread. I live in Florida and my house elevation is 4' below sea level, so high altitude to me means standing on a curb.
DiscoJen said:I had gas at altitude once...that was a plane full of pissed off people.
Other than a bad joke, I have nothing more to contribute to this thread. I live in Florida and my house elevation is 4' below sea level, so high altitude to me means standing on a curb.
:rofl: You're funny!
So I've been using 87 at 7500' for a while now without any problems. I'm about to move back to the east coast... Will I need to switch back to what is it there, 93?
Better question. Do any east coasters use 89 on a D1 4.0?
Better question. Do any east coasters use 89 on a D1 4.0?
i use 91 @ 9500+ and that seems to work the best.
when I first drove up the mountain, I used a tank of 87 or something, the lowest, then on the mountain, I used a tank of mid, then went to 91. Not sure if it made a difference, but 91 seems OK
when I first drove up the mountain, I used a tank of 87 or something, the lowest, then on the mountain, I used a tank of mid, then went to 91. Not sure if it made a difference, but 91 seems OK
H
headache
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That is why your truck is equipped with a MAF, it meassures among other things, the oxygen level at different altitudes, if you have a bad MAF at high altitudes, you will notice it, as you would of with a primitive carburator vehicle, that was set for normal altitudes.
I am on the east coast, I have a 1999 SD Discovery that I just drove back from Seattle, 90K on it, MAF went on me on the trip, before the Continental devide, and I noticed it when I started to to climb.
The truck is for Sale any one interested contact me, I am located in Orange County N.Y.
I am on the east coast, I have a 1999 SD Discovery that I just drove back from Seattle, 90K on it, MAF went on me on the trip, before the Continental devide, and I noticed it when I started to to climb.
The truck is for Sale any one interested contact me, I am located in Orange County N.Y.
darw_n said:
And that was just to get from your house to the tunnel, wasnt it:rofl:
What was the deal with snow yesterday? It snowed on me from Vail to Georgetown, which sucked because I didn't have the side windows or the back curtain in. On top of that, Loveland pass was closed so they pushed all the hazmat trucks through the tunnel:ack:
I'll stop whining now..........