Phase separation
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Joined: Aug 2009
Posts: 3,661
From: Georgia
Yes its the same base fuel it comes in through the south and only bp ultimate can use it. Also I did some research from the epa website. Premium is ultra low sulfur so the sensors are more accurate. Sulfur contaminates the o2 sensors and the readings are not as accurate and the ecu makes slower corrections, Before you throw it back some of the top tier gas stations has ultra low sulfur regular too, but its not every where yet and ethanol free premium is coming back as 91 octane about as hard to find as 100 octane racing fuel.
I never said that the Fit cant use regular. There are benefits from premium.
I never said that the Fit cant use regular. There are benefits from premium.
Have you got any links for your research? It would help your argument.
edit: my research indicates there is no difference in sulfur content between regular and premium fuel. Importers of fuel are allowed higher sulfur limits (80ppm) than domestic (30ppm). link
Historically much higher sulfur was present in gasoline, but not after the new regulations took effect. This chart from 1996 (see page 14) shows levels in excess of 500ppm. At that time regular gasoline had more sulfur, but not today.
What's this got to do with phase separation?
Last edited by Steve244; Sep 6, 2010 at 11:08 PM.
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From: Illinois
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