I have white asphalt shingles. Anyone every has success with a thin asphalt sealer on asphalt shingles. I know they make a special paint for this but dont want to spend $50/gallon on it. Thanks.

No!! Never did and never will. You`ll regret it.

Any egshell latex paint will work better than the 50 dollar a gallon products. Still, I don`t recomend it, but if you must,...egshell latex paint !!