2016 EXL AWD Nav with sensing , 2008 Corolla SE
I just changed my oil and filter after 5000 miles and it was really black and had a nasty smell. The maintenance minder said it was only at 50% and there was no way I was waiting any longer to change it. I use Wix XP filters and Mobil1 synthetic but it is possible that the previous owner did not change it on a regular basis and there was excess sludge in the engine. What is the condition of your oil when you change it?