hi guys,i'm a mechanic after overhauling few of the komatsu SA6D140 engines, they have high lube consumption about 8 liters per week, these engine run about 22 hours daily,the overhaul was done by me ,i have change all 6 piston,pin, & rings, Camshaft bush, camshaft, main bearing , con-rod bearing..the overhaul was done following all the normal pro.Even the turbochargers was changed and togather with the valve guides,valve seat, valve seal,and valve locks..i have been overhauling diesel engines for 12 years now this is the first time i come across this type of a problem...pls help out guy...cheers