Dubnyk foiled two Colorado power plays to nail down Edmonton's second consecutive win at the end of a 3-4-1 road trip.
Shawn Horcroff, Sam Gagner, Magnus Paajarvi and Ryan Nugent-Hopkins accounted for the Oilers' goals in a game in which they were only whistled for penalties twice. Nugent-Hopkins' third-period goal came on one of Edmonton's four power plays.
Semyon Varlamov turned in 27 saves, but could not extend Colorado's two-game winning streak, which included wins over the Chicago Blackhawks and San Jose.
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