Eight miles to the gallon sounds like a dealbreaker, and for most people, it would be. In this unique situation, the math actually works out.

This man is turning heads as he shows off how he runs a military surplus truck for free because of war-era engineering most people have never heard of. Would this make you want to drive one?

This Car Runs On Used Motor Oil?

In a video posted by AJ (@the_offgridguru), he replied to a commenter who pointed out that his car’s fuel efficiency sucked. “The problem is that you get 8 miles to the gallon on a good day,” the commenter wrote.

AJ said it was a fair point but missing context.