Steve your funny...500k is at full engine potential??? Ha ha....My prevoiusly owned 330,000 SC400 did use about one quart of oil between 3000-5000 mile oil changes if I remember correctly but the motor still ran like new...I still would say these engines are tanks to say the least but all piston rings begin to wear out eventually, inperfections appear on the cylinder walls, etc on every engine.....
Diesels engines have nothing on the 1uz's, he he...:28: