It happened again. For the third time! My 99 LC, which gives me 12-14 all year in Southern California, gave me 18 mpg on a Yellowstone trip. What gives? Better gas in Nevada/Idaho/Montana? The high elevation - is this like doing the long jump at the Mexico City Olympics?! Is it the hours of driving with limited braking and 45mph driving? Is it driving so many hours - driving up as well in the park - that the engine never cools? Bison magic? Bison methane? All of the above?
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