need adive when to switch to synthetic oil

[tomkfx700]

hi i just bought a lt-r450 on the 20th. i want some advise on when to switch over to synthetic oil. i will be going with mobil 1 mx-4t 10w-40. should i wait for a couple of changes or should i switch over right away? thanks for adivise.

I would put at least 5-10 hours on it with regular petroleum based oil. The rings need to seat before you switch to synthetic.