Well...go for it...in city, my 1kz (96 model prado tz) used to give me 5-6 kmpl...and on highway it gave around 8-9kmpl. If you care about its oil change / oil filter, then it wont give you any problems inshAllah. Also, dont leave the 4x4 transmission un used for a long period of time, or its chain would get stuck.