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Things To Know About Buying Gas At Altitude | Mike Shaw Subaru But because of that higher altitude, did you know that gasoline sold in Denver and a couple other Rocky Mountain states is actually a little bit different than what you'll get at sea level? The octane rating is in fact noticeably lower, which can lead to performance problems at lower altitudes
Can lower octane high altitude mountain grade gasoline be used with EFI . . . 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 the engine is farther away from the point where it will start knocking and get damaged
Is 85 Octane Ok To Use At Altitude? - Trusted Auto Professionals In an article by USA Today, General Motors fuel specialist Bill Studzinski said, “We do not endorse the use of 85 octane or lower” The Federal Lands Transportation Institute also said in a document that, “Most modern vehicles with fuel injection can automatically compensate for higher altitude
High Altitude Driving And Gas Mileage | Endurance Warranty Unfortunately, the answer is yes, and it isn’t good news This goes back to your engine being starved of oxygen, and as a result of there being less air to pull in, fuel isn’t burned as efficiently
Does Altitude Affect Vehicle Performance? In a Word, Yes. Fuel system: A lower octane level of fuel is required at higher altitudes, since there isn’t enough oxygen per volume of air to take advantage of high-octane fuels If you fill up at a high altitude and return to your lower elevation later, you may suffer from engine sputtering and a lack of power
When Driving at High Altitudes: Choosing the Right Octane The impact of high altitude on fuel octane requirements is significant In essence, the lower air density at higher elevations means that an 85 octane fuel can perform similarly to an 87 octane fuel at sea level, reducing the risk of engine knocking
30 Car Mysteries Solved: Low Octane Fuel at High Altitudes It's a lot like lowering the compression ratio in the engine, reducing the need for high octane Cars will run just fine on lower-octane fuel when they're well above sea level--and all of
The Effect of Elevation on Gas Mileage - It Still Runs Altitude decreases an engine’s octane requirements because of the change in air pressure The higher elevations have a lower level of air pressure, which means an engine needs less octane to properly fire due to the lower ambient pressure