changing of the normal engine oil is every 5k mah,
correct?
then full syn engine oil is @ 10k right?
so...
-> 1k: change normal/cheaper engine oil, spark plugs,
filters...etc.
-> 5k: change normal/cheaper engine oil, spark plugs,
filters...etc.
-> 10k: change to full synthetic engine oil,
spark plugs, filters...etc.
am i right ??? 
mua still green & quite blur... 
please correct me if i'm wrong.