I was looking for a one cylinder diesel engine today for our new Troy-Bilt Horse rototiller. It appears that the Horse model is the simplest, longest-lasting rototiller of all tillers – so we snatched one up. It was made in the 70’s, and it didn’t have an engine.
In my engine search, I ran into Volkswagen’s 250 mile per gallon car – also a one cylinder diesel. Wow. 
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