When Driving At High Altitudes The Grades Of Octane Is Er Gas Better For Your Vehicle? Sun Devil Auto
When driving at high altitudes, the grades of octane for gasoline are indeed reduced compared to the grade of octane available from gasoline retailers located at sea level. Why is the high octane gasoline not required at high altitudes? If you're filling up in denver, it's probably right to step up a grade if you're heading on a trip.
Lower octane at higher altitudes? BobIsTheOilGuy
In most cases, you won't experience any problems running 85 octane in an ordinary car when a few thousand feet. In most states, regular unleaded is rated slightly higher at 87. Ran it for years when i lived there, and still run it when i visit family now.
The reason for this is.
For instance, regular grade fuel is 87 octane in chicago, but 85 octane in. For the first question, when driving at high altitudes, the grades of octane for gasoline are reduced compared to the grades of octane available from gasoline retailers located at sea level. If you fill up at a high altitude. If you’re at high altitude, however, a low octane is better.
You should not fill up with low octane gas if you're headed away from those high altitude states. Therefore, the grades of octane for gas are indeed reduced at. If you had filled your gas tank with 85, at high altitude, when driving down at lower altitudes, just mix in some premium gas to increase the cor+m. At higher altitudes, the air is thinner so you can actually get by with a lower octane gasoline.
How is Octane Rating Affected In High Altitudes? 034Motorsport FAQ
I live at 7000 feet, and i've heard people say don't waste money on premium grades, for stock normally aspirated.
The use of lower than required octane fuel at high altitude makes complete sense, because the lower air pressure means that the cylinder pressure in the engine will be lower, so. Based on average maximum fbru and fbrsu octane requirements, varied as shown below. For instance, a car that performs well with 91 octane fuel at sea level may only need 87 octane fuel at high altitudes. 85 octane works fine in most normally aspirated engines, fuel injection or carb, at higher altitudes.
Motormouth Different octane gas at different elevations?
Lower octane at higher altitudes? BobIsTheOilGuy
