I got 2006 volvo 780 for sale otr ready. The truck runs like it has 300,0000 miles on it . It is well maintained . Oil changes done every 15,000. Everything from outside the engine has been replaced ; power steering, Radiator condenser, king pins , alternator , starter , complete dry shaft,new fuel pump an injectors, new lights all around , new egrs, tune up is done every 100,000 miles on it tires all have 85% tred on them all around . It's lot of things , to much to list you can see for your self .