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Welcome back!
If it were me, I wouldn't change the oil until you've started the car and gotten everything warmed up. Drive it for at least half an hour, then change the oil. That will get all the sludge and deposits hot and suspended in the oil. They can then drain out with the old oil. If you change the oil without getting everything warmed up, the deposits will just stay in the bottom of the oil sump and heads, and when you put the new oil in and get it hot, the deposits will then dilute the new oil.
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