أرسل هذا في رسالة قصيرة: Assessment of lubricating oil degradation in small motorcycle engine fueled with gasohol

  _____     ______    ____     __   __    _____   
 /  ___||  /_   _//  |  _ \\   \ \\/ //  / ____|| 
| // __     -| ||-   | |_| ||   \ ` //  / //---`' 
| \\_\ ||   _| ||_   | .  //     | ||   \ \\___   
 \____//   /_____//  |_|\_\\     |_||    \_____|| 
  `---`    `-----`   `-` --`     `-`'     `----`