Unfortunatelly, I do not trust dealerships for oil changes or some other mainatenace I am able to do, so I do them myself knowing the kind of oil my Toyota vehicles will have. As an FYI, my local dealer insisted that no matter what we put 5W-30 on 2007 TCH as well, I said ok, but surely not in mine... I plan to use the 100% fully synthetic Mobil 1 0W-20 and I hope by the time I do my first oil change Mobile will have out the more advanced formual Super Syn that is good for up to 15,000 miles (of course I will never go above 5-6k miles).