hello.. i had a new motor installed in my is300.. i was wondering.. when do i change the oil again in it?? 500 miles? 1,000miles? 3,000 miles?? ,, the oil that is in there right now is conventional oil from lexus.. When can i change to synthetic? do i need to be easy on the car for first 500miles or what??? give me pointers.. thank you!
-flea