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

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