[VernSchillinger]

Assuming the average mpg on a gasoline Tundra is 15 mpg and the average mpg on a tundra equipped with this diesel is 22mpg, with the price of gasoline even increasing to $5/gallon, it would take just over 47K miles to breakeven on the incremental $5K cost premium associated with this engine. Thus, you wouldn't start to see any cost savings until past year 3 (assuming you drive 15K a year). This doesn't take into account the opportunity cost of putting the $5k into an interest bearing option.

I think people are quick to forget how much gasoline $5k buys, even at these elevated prices.