Car in question is my daughter's 2007 Civic EX. It's been on a steady diet of PYB 5W20 since she acquired it with 52,000 miles. It's at 114,000 miles now. Not consuming any oil and there are no leaks as far as I know - she lives out of town so I can't inspect it that frequently - but I did teach her how to check the oil level and add oil. Should I make the switch to high mileage oil next time she is back in town and due for an oil change? If so, what oil would you recommend? Right now she pretty much drives it on weekends as she commutes via mass transit. Thanks for you feedback.