dude u are not supposed to change to semi/Full Synthetic oils so soon as pistion rings need 2 set properly (thats what all say) so u can use after riding around 5000kms. till then use mineral oils (castrol power one 20w50 or what other company u want with a w50 grade). After running for 5000kms use Motul 15w50 Full synthetic, its pretty good and drain interval is 7k for normal riding (ie if u dnt tend to ride with rpm needle in red
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