Originally Posted by viswanath007

Guys my bike bought on november 2009 clocked 5900km now due 3rd service anytime now.my bike started heating up after short distance of 7 to 10km after 2nd service.service centre guys told this is normal but i dunno.a friend of mine told to change the oil so at 4000 kms i changed the oil to castrol active 20w40 semi synthetic but heating up still continues so i have few questions regarding the oil
is there any damage to the bike if i do not use oil of the prescribed rating(20w40)
which oil should i preferably use....?
i was thinking of a)motul 15w50 factory line
b)castrol power1
c)i visited an oil shop there was valvoline sythetic blend oil which doesnt have any rating they said its very good, costs around 300+bucks
d)or should i stick to the prescribed yamalube??

any1 here in the thread have same heating effect after short rides?
awain your replies