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@ Mariohere. Yeah, most vehicles DO get better mileage during the winter. Cold fuel burns better too, regardless of the octane rating. Basically the same concept as NO2. All NO2 does is DRASTICALLY reduce the temperature of the incoming fuel to the combustion chambers. But NO2 drops it WAY...

Very nice. Lucky on the buy too!

Think of 'octane' in the terms of stability. The higher the # of octane, the more stable it is. Low octane fuel has a tendancy for early detonation. Higher octane fuels offer a more stable platform for your vehicle to work off of. You get more of an efficient burn on higher octane fuel than you...

I am having both of these codes appear and recently had a fuel delivery issue that required me to replace the fuel rail, injectors, and fuel pressure regulator. The codes that are not popping up are said to be directly related to each other and are due to upstream O2 sensor issues. My question...