Alas, with the total focus on clean emissions in the late ´60s-early ´70s, fuel mileage was completely overlooked, with the result that experimental steam cars of that era got worse fuel mileage than comparable gas cars.
Then the 1973 oil embargo hit, fuel mileage became the number-one issue, and the steam car projects of the time were ´Dead On Arrival´.
Using highway mileage, their 15,000 mile fuel expenses come out to $1071.00 for the Subaru and $1764.00 for the Jeep.
Sonex Research, Inc., a leader in the field of combustion technology, is developing its patented Sonex Combustion System (SCS) piston-based technology for in-cylinder control of ignition and combustion, designed to increase fuel mileage and reduce emissions of internal combustion engines.
Fuel mileage ranged from the Spirit´s 42.5-mpg average to the 35.1-mpg average of the Aero.
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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