Don Money drove in three runs with a home run and a triple last night in Detroit to give Milwaukee a 6-3 triumph over the Tigers and help the Brewers protect their shrinking lead in the American League East. Milwaukee now leads Baltimore, which won a doubleheader from New York, by 1 1/2 games.

Doc Medich went the first 5 2/3 innings, allowing seven hits and two runs to raise his record to 11-13. Jim Slaton finished up for his sixth save.

Milwaukee led, 2-1, on a two-run single by Ted Simmons in the third inning until Money led off the sixth inning with his 15th homer of the season. It came off Elias Sosa, who relieved starter Dave Rucker (2-5).

Sosa gave up a walk to Gorman Thomas and a single to Ben Oglivie in the seventh and Money greeted reliever Dave Tobik with a triple to center that rookie Glenn Wilson misjudged. Money scored on a chop single down the third base line by Jim Gantner.

Lou Whitaker singled in Rick Leach in the third inning for Detroit's first run and Chet Lemon singled with two out in the sixth to make it 3-2 after Wilson doubled to right-center to lead off the inning.

Wilson hit his 11th homer of the season to start the eighth inning.