I disagree. I've been experimenting with high fuel mileage vehicles for 40 years. I've had just about every economy minded diesel (and many gassers) ever sold in the USA along with a few custom builds. I've had several of the "100 MPG" vaporizer carbed Pogue machines (that were lucky to actually get 25 MPG). I've had cars that run on wood smoke. I had the first full size Dodge diesel truck in 1978 (Mitsubishi straight 6). I've had Chevy S10s with 2.2 diesels, LUVs with 2.2 diesels, Ford Rangers with the NA and turbo diesels, Dodge Ram 50 mini-trucks with diesels, etc. I also had a Jeep from the 60s with a factory 4 cylinder Perkins diesel. Also had many, many Volkswagen 1.5 and 1.6 diesels. I know one thing for sure. There is NO magic combo out there in the mainstream. I don't care if your mechanically injected diesel is an Isuzu, Perkins, Yanmar, Standard, Cummins, Mistubishi, Toyota, BMW, Renault, etc. They all work generally the same. If IDI they will be around 10% less efficient then DI. If turbo - they are no more efficient then NA when near sea-level but will excel at high altitudes. I know - in the real world what all these rigs get. Granted a 2WD that is lower and lighter then a 4WD will do a little better. Also any non-turbo engine loses 1% efficiency for every 300 feet above sea level. So a vehicle driven at 5000 feet is going to do poorly (if no turbo) as compared to the same driven at sea level. I will also note I've seen the silly BS stories about high mileage, ad nauseum for ages. I kind of wonder why none of big auto makers were never able to find a 5.9 liter diesel in a pickup and get it certified for 25 MPG "around town." They couldn't barely do that with a 2.2 diesel in a mid-sized truck like a Ranger or S10. The reason is - it never happened. Note I still have over 20 older diesel cars and trucks. None have magically improved to get anywhere near any of these claims I've heard.
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Today's Featured Article - Fordson Model N: Field Service Operations and Lubrication - by Anthony West. The daily or weekly servicing of any vehicle is of the utmost importance, and in days gone by when our favorite tractors were doing an important and Commercially vital job on the farm, these service operations would make a major difference to the running costs and economy of the farm. This being so, it surprises me to see how many enthusiasts attending rallies, shows etc, seem to be unaware of the importance of this constant attention. Possibly the modern machine with its 6,000 mile or even once
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