MPG???
I remember seeing a quote some where about the Landcruiser having the aero-dymanic qualities of a brick. Not entirely true, but mostly accurate.
Anyway, I average about 14 mpg...city, town, freeway, street, etc.
They aren't known for their gas mileage qualities. They are however built like tanks and go anywhere.
BIRFIELDS...
The best way I can explain is...well they are the axle shafts just inside the axle from the brakes. Just part of regular maintence. I haven't done mine yet, still on the list of things to do (which is very long)