Wife just bought a new Focus SVT. Manual says to use 5W-30 and not to use synthetics until 6k+. I have done a search on this car and another person said factory fill was M1, but manual says specifically that the car does not come from the factory with synthetics. Was thinking of Chevron Supreme 5W-30 at 1k, 4k and then switch to M1 at 7k.
What do you think?