I start to use mobil one. Is this good to my car?

If you plan to keep the car a long time it is worth it. Make sure you get a good oil filter or it will not be worth it. Only use Mobil1 or OEM filters.
You are at the perfect mileage for synthetic. You cannot use synthetics for at least 30,000 miles as it works so well the motor will not break in.
It will give you a extra HP or 2 and help with fuel economy. People don't beleive that but it has been proven.

As far as oil change schedule, it depends on your driving habits. If you drive your car in stop and go traffic, drive it hard, (fast), drive in dusty or smog polluted areas, (near cities), you should change it every 3000 miles. A lot of people think synthetics can go some extra time without oil change. This is not true because the oil still becomes contaminated with fuel, carbon deposits and other contaminants. So, I reccomend 3000 miles, but it all depends on how long you want to keep the car and the the type of stuff your car goes through, as I mentioned earlier. If you want to go longer in between oil changes, it depends more on the filter. I think the Mobil1 filter is good and you could go 4000 miles with it.

The Toyota filter is a great choice too. You cannot do much better than OEM Toyota parts.

When an engine is first built it has to go through a, "Break In" period. This is where metal surfaces, such as as bearings and piston rings, and rubber to metal surfaces, such as seals, rub against each other more than the engine will after 3000-30,000 miles. The surfaces seal better and match each other and after break in the car will perform better. Usually when you get a new car you should slowly drive it harder and faster, not hard and fast when it is brand new. This is because it will not performa as well and seals will not seal out contaminants as well.
When synthetics is used during break in it lubricates, "To Well". Meaning it does not allow the surfaces to break in to each other. This leasds to leaking seals, blow-by on piston rings and poor performance.

I hope this helps.

Dr. C

No problem, come back anytime.