hi ,my english is not good,at first i greet you all and i admire this motors with my heart ,i had also a question if somebody knows about this motor YAMAHA tenere XT 660 z 1991 , the motor has already 67000 klm past so because it has only 1 cilinder ,i was a bit scared if it would last long because i liketo keep him long time ; so far it runs perfect but is it ok if i would make trips from 300 to 500 klm long highwhay ???? thenx and enjoy all you people with your motors