If your sealing it, just buy a bucket or 2 of homedepots top of the line sealer, $20 maybe a bucket, a sealer squegee($5), pour and spread. It goes quickly. Theres usually 3 different grades of sealer. You may also want to clean any oil spills off with cleaner and I believe they have a primer to cover these with. They also sale crack filler, for well cracks if you need it.