Nilsson and the German Kai Huckenbeck had a wonderful points night in Hallstavik where both scored 16 points.
31-year-old Nilsson became Swedish champion with Masarna this autumn.
Now he is back in Rospiggarna where he became a bit of an audience favorite during his five seasons at the club 2011-2015.
The Indians lacked several star drivers in the meeting and the away team had to fight with a decimated team.
Injuries, illness and logistics problems made the narcissists a mouthful for the Rospiggarna.
The Kum team went on several costly exclusions at the beginning of the match.
But the guests flashed in the seventh heat where 17-year-old Gustav Grahn followed the World Championship driver Max Fricke to a fifth.
Gustav's big brother Jonathan Grahn, 20, took a nice heat victory in the 13th heat.
Rospiggarna has convinced at the start of the season.
After a narrow premiere loss away against Vetlanda, it was now a big victory where the home team decided the match early and offered the home crowd five fives.
For last year's finalist the Indians, it was the second straight loss.