MDSA

I showed the vehicle to a technician and he told me to do these, 1. Engine Tune up (Diesel filters replacement and injector cleaning) 2. Drive belt adjustment 3. Turbo checkup What should I Do for a tune up ?? Only these two (Diesel filters replacement and injector cleaning) ??????

Hi, I bought a Micro Kyron 2009 (milage 92000km) tiptronic Vehicle , and I drive it with a lower RPM (2)... But, it does only 7.5/8 KM per Liter, and I searched it through the forum and it says that it does around 11/12 km per liter... Any Solution ???? Do i need to do a engine tune up ???