Dean Gorchynski, Roux Bazin, Davis Chorney and Nolan Wallace replied for the Oil Caps.
Loic Mainguy-Crepault earned his 10th win of the season in the Stamps’ goal making 22 stops.
The Stamps will now be off until they host Game 1 of the Best of 7 first round series on Friday night in Swan River, their opponent will either be the Dauphin Kings or OCN Blizzard.
Elsewhere in MJHL,
Waywayseecappo Wolverines 2 OCN Blizzard 4
Winnipeg Blues 1 Niverville Nighthawks 5
Selkirk Steelers 3 Neepawa Titans 2
Portage Terriers 3 Steinbach Pistons 2