Hello Guys, I imported to my country a Diamo Tracer 150. The first thing my friends recomend me ios to change the factory oil thats come with the scooters because this is a China made Scooter that comes with bad quality oil so I buyed a 1/4 of Castrol 15w40 and changed the oil.

My question is: Do I do good putting new Castrol 15w40 oil?
When you recomend me to change this oil for a new one.
Can I use Full Synthetic oil in my next oil change?

THX,

Isaac

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