I have a long blacktop as well. They can dry out (lose color) and develop cracks (thanks tree roots) and everyone in the blacktop business wants to redo mine. One actually wanted to rip it out and lay down a new one (for fifty thousand dollars). I go to Lowes and buy blacktop sealer and apply it myself. Squeegee it out. Hard work but I don’t have the money to hire it done.
Mine is breaking apart after about 25 years.
Up here in NH the frost breaks them up.
Mine is 200’ long.
Plus my house sits on a hill about 35’ in elevation above the road. So, part of the driveway is a 10 degree slope.
Which makes it fun in the winter.
The house was built in 1972.
The driveway would not be legal today.
It is too steep.
It is grandfathered