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.
By using a directly-injected stratified charge, it was supposed to be the answer to the automobile´s double whammy of emissions controls and fuel mileage requirements.
Most rewarding is the 300D´s limited thirst; its incredible fuel mileage of 30+ mpg is mindboggling for a full-size automobile.
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".
Do you want to know right now how you can drive around using water as fuel and laugh at rising gas costs, while reducing emissions and preventing global warming?
Convert your car to burn water as well as gasoline - to double your mileage!
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