Administrator of estranged fathers estate.
I assume you omitted the words "I am the" from the beginning of this sentence fragment.
Assuming that's correct, I'm going to ask the following because many, many people get this wrong: Were you appointed by the court to serve as administrator? Or are you just nominated in your father's will to serve in that capacity?
Am I required to sell his car to pay remaining debts?
As a very general matter, the administrator of a decedent's estate is required to do the following:
1. Identify and take possession and/or control of the deceased's assets.
2. Identify the debts of the deceased.
3. Use the decedent's assets to pay the decedent's debts (liquidating non-liquid assets if the deceased's liquid assets are insufficient to pay debts).
4. Distribute anything that's left over to the heirs under the will or the intestate succession law.
If, in fact, you have been appointed by the court to serve as administrator, then those are your basic obligations. If you have not been appointed by the court, then you have no obligations whatsoever, although if you acquire and retain estate assets that could have been used to pay estate debt, you may be held liable by the estate's creditors up to the value of the assets retained.
I could have filed small estate probate but wasn’t aware of his assets at the time. Is it too late to change to that?
Answering this question rather obviously requires that we have temporal reference points that you didn't provide.