Menard, a Sprint Cup regular, made a mid-race pit stop and was informed by his crew that he needed to save two gallons of fuel in order to finish the race without stopping again on the road course.
Menard led for nine laps in the 180-mile race on NASCAR's second-tier series.
Brian Scott was third. Series points leaders Chris Buescher finished ninth.
Menard, from Eau Claire, took the lead immediately after a restart with four laps remaining, which followed a six-lap caution period. Blaney and Menard separated themselves from the pack with two laps to go.
Pole-sitter Ben Rhodes slid off the course with 10 laps to go and became deeply buried in a gravel pit. He finished 32nd.
