What's everyone take on when to get the 1st oil change, I've heard everything from flushing it out after the 1st - 1000 Kms too leaving it in because it's breakin oil ? & should be left in for 5000 Kms ? car currently has 3,000 km's on it ! Appreciate and advice & do Coyote motors like syn oil or regular dino ?? (will be done at the dealer so may not have much choice)