+1 on that!Today's regular oils are so much better than the oils of 30 years ago. I don't think you can't go wrong with any major brand oil, regular or synthetic.
I had my Mercedes turbodiesel on syntetic from day 1 with no problem . The onboard computer kept tag of all events and prompted me to change oil at around 14000 miles. Always changed around 10000. Had no problems till I sold it with 191.000 miles. I think syntetic oils are far superior because are man maid and have no unwanted components like the regular ones. I think the switch should be OK. Even big trucks run for 25000 to 30000 on an oil change. Changing the oil at 1000 miles is a waste of money and resources.
You need to read all the zeros after the 1. I was changing oil at 10.000 miles!!QFMFT!! Changing the oil at 1000 miles is a waste of your money and you're only doing your extra part in contaminating the land fills. In my 02 Explorer I changed the oil on it every 7500-10000 miles in harsh winters and hot/humid summers. All I ever needed to do was top it off when needed and that was it. The truck still runs on the original engine after 125k miles.
People use Commas and Periods differently at different part of the world as delimiters interchangeably. We know here 10.000 means 10K miles, no problems here.You need to read all the zeros after the 1. I was changing oil at 10.000 miles!!