![:unsure:](http://seadoosportboats.com/public/style_emoticons/default/unsure.gif)
i have sportster 2001 with a 130 hp rotax presently it run with bombardier mineral oil i have 30 hrs on it
i have some somke for the first 3 minutes i guess and after that it smell just a little at idle
![:thumbup1:](http://seadoosportboats.com/public/style_emoticons/default/thumbup1.gif)
so my question do i have to buy a tc-w3 oil or not
![:whistling1:](http://seadoosportboats.com/public/style_emoticons/default/whistling1.gif)
and what about synthetic is it really smokeless like they said and on the engine is it better
![:whistling1:](http://seadoosportboats.com/public/style_emoticons/default/whistling1.gif)