Hello all. I am trying to find a quick answer for my sister. She has a 93 4 runner V6 5 speed. She recently had a valve job done, both heads, along with a water pump, timing belt and a new radiator. She seems to think that her fuel economy has gone down alot since the work was done. The truck has about 180k miles and she recently moved to alaska from central cali. To those who have the same truck, what kind of fuel mileage should she be getting? She says its about 14 mpg in city driving.