Yes , 15 min at 100 degres celsius. 
Many people says that this modification is expensive, but it is one of the best investments i have made.
When i am driving with my mates at night, they might just as well drive without light, because i am lightning up the road and their lights can not be seen.
And i light up ca. 4-5 meters out on every side off the road.
When i drive at day and in sunshine, i have noticed that the cars dont tend to drive out from side roads, when i pass.
Many people says that this modification is expensive, but it is one of the best investments i have made.
When i am driving with my mates at night, they might just as well drive without light, because i am lightning up the road and their lights can not be seen.
And i light up ca. 4-5 meters out on every side off the road.
When i drive at day and in sunshine, i have noticed that the cars dont tend to drive out from side roads, when i pass.
Dont try to be the best in town, just be the best, until the best come arround