I just changed oil in my LC yesterday and decided to use an OEM filter that I got from the dealer based on this post. I asked about the oil quality that they use in Toyota's motor oil, since the PO only had the oil changed at a dealer, and they said it is made by Valvoline, which I do not care for. Instead, I use Pennzoil High Mileage 5W-30. I also use the same Pennzoil in my other vehicles and I have always had good luck with it. I am thinking about switching to the Pennzoil Ultra Platinum Fully Synthetic because I drive a a lot of short trips. I only live about 2 miles from work but combined there are about 18 stops signs and stop lights between here and there. The extra protection might be good because of my driving conditions. I consistently change the oil and filter at 5,000 miles in all of my vehicles. Maybe I should change it with conventional oil at 3,000 miles in the LC because of the short trips?