McDavid played 24:02 in Game 6, most of any skater, and he had six shots on goal.
In the series, he has an NHL-leading 12 points (three goals, nine assists). The 25-year-old won his fourth Art Ross Trophy as NHL scoring champion with 123 points (44 goals, 79 assists) in 80 regular-season games. He is a finalist for Hart Trophy, awarded to the MVP of the NHL. On Friday, he was named a finalist for the Ted Lindsay Award, given annually to the most outstanding player in the NHL as voted by fellow members of the NHL Players' Association.
"When he's skating like that, he's really tough to handle," said forward Evander Kane. "He saw an opening a couple of minutes in on a nice burst of speed up the ice and tucked it home on the wrap around. He's been great for us all series and we're going to need him in Game 7."
RELATED: [Complete Oilers vs Kings series coverage]
Kane scored twice, including into an empty net, and has nine points, including seven goals, which is tied for first in the NHL with Jake Guentzel of the Pittsburgh Penguins and Kirill Kaprizov of the Minnesota Wild.
He said the Oilers' resilience, led by McDavid, was key in the third period after the Kings made it a 2-2 game with a goal by Carl Grundstrom 29 seconds after intermission.
"We didn't start the third period the way we wanted to, but this group has been showing it all year, sticking with it, and not getting discouraged," Kane said. "We knew we could get one - we just had to make sure it was the next one. We did a great job to bring it back home for [Game] 7."
McDavid also had a big boost in Game 6 from a strong defense group, which was missing No. 1 defenseman Darnell Nurse, who was serving a one-game suspension for head-butting Kings forward Phillip Danault in Game 5.
"[We were] successful tonight without turnovers in the lineup," Barrie said. "But you can't replace [Nurse]. We're just keeping it simple and everybody's not taking unnecessary risks. We're staying above our checks and [we're] competing, everyone's competing. There's no secret. It's just every shift counts, every little play. So I think that was the mindset."
Barrie, who has three points (one goal, two assists) in the series, said the Oilers stayed aggressive without being too risky once the Kings tied the game, an important development given that Edmonton has lost its focus several times during the series.
"Yeah, we give one up early [in the third period] and you know, it's back to 0-0," he said. "So I think we did a good job at not turning it into a track meet and we just stayed patient and tried to wear them down. They had some looks we had some looks. It came down to the last five [minutes] so I thought we did a did a good job of not getting down on ourselves."