For instance, the Turnpike Traveler page offers an interactive travel map, and a Toll/Mileage calculator.
In D-4 direct injection, fuel and air is injected directly into the cylinder, instead of mixing it in the intake port which is how conventional fuel injection works.
Due to ethanol´s lower energy per unit volume, it should take more fuel to maintain a stocheometric (perfect) air/fuel ratio, which all newer vehicles will attempt to do (closed-loop fuel control being pretty much standard for the last 20 years).
How to save money by improving fuel economy and performance in any vehicle by up to 30% or more without expensive gadgets. Gas Mileage Bible is a must for anyone who drives a car. Simple scientific explanations on what causes losses and gains in fuel economy. Clear-cut gas-saving solutions, breaking down into straightforward categories: "no tech", "low tech", and "high tech".
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