Rotella T6 5w40
http://www.shell.com/home/content/rotella/products/t6/

http://www.google.com/search?q=T6+5w40&rls=com.microsoft:en-us&ie=UTF-8&oe=UTF-8&startIndex=&startPage=1&rlz=#q=rotella+5w40+synthetic&hl=en&rls=com.microsoft:en-us&prmd=ivnsfd&source=univ&tbm=shop&tbo=u&sa=X&ei=G1RATrDeD4WIsQLfu6Qw&sqi=2&ved=0CHcQrQQ&bav=on.2,or.r_gc.r_pw.&fp=cb18799be3bd9f8c&biw=1280&bih=863