I would try sometype of crusher run top soil blend. I would not be afraid to reuse millings that have sat for a year the asphalt has not disappeared it still there. The key is to regrind them or break up the chunks as much as possible. I would also try to break up the old drive as much as possible.

Just as a reference I have about 70,000 tons of millings in our yard. We crush them and add them back to asphalt. Our lab tests them often we have yet to lose any asphalt content unless we fail to keep them clean. Some piles are 25,000 tons plus and have been there for 6 years.

I would still recommend using kero or fuel oil to rerelease the ac.

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