DrewQ-- Don’t have an accident. They will ding you for no odometer. I just did, they totaled my 99 and would not fix it. Drove it for three months before I settled. They gave me enough to fix it myself. I did but the odometer is not one the things I fixed. It looks grat I I shall drive it til it dies.
I just estimated the number of tanks of gas I used for a week, times my average miles per tank, times the number of weeks since I bought it and they accepted that.
You could use the same formula to know when to change the oil.