Recently was looking over the service history of my 2015 mazda 3 and noticed something terrible. I went from 6/22 - 11/23 without an oil change. I hardly have been driving this car so I didn’t even realize it had been so long. My sticker only had a mileage on it and not a date and I stupidly didnt realize how long it took me to do 5k miles. The car only has 85k on it.

I live in Chicago which is a harsh climate with mostly city driving. However, the car was opened up on the highway every month or two for a decent amount of time/distance. How much damage might have I caused? It had full synthetic in it at least but I am terrified because this car is expected to see a lot of use from here on out and needs to last which I’m afraid is not going to happen now.