12th April 2018, 16:25 | Wigan
Fresh from his man-of-the-match performance in the Warriors' 32-23 win over Catalans Dragons in Perpignan, the 35-year-old loose forward remains a key figure in his club's drive for honours.
And O'Loughlin says Leeds Rhinos' own veteran, Jamie Jones-Buchanan, who turns 37 on August 1, is just as crucial for the defending champions, who host Wigan in a top-four clash at Emerald Headingley on Friday night.
"He's going really well," O'Loughlin said. "He's still a big player for them.
"We've seen some of their senior lads go, like Danny McGuire, Rob Burrow and Jamie Peacock, over the past few years and Jonesy has been one of those players who keeps driving the standards at training.
"He's kind of the heartbeat of the club and he's contributing massively to their performances."
Wigan coach Shaun Wane, too, is full of admiration for Jones-Buchanan, another one-club man who has made an impressive start to the season.
"He's a competitor," Wane said. "I admire what he's done in the game.
"He's a great player and I love my team playing against him because you know it's game on with him. He doesn't give an inch."
While Jones-Buchanan, the second-oldest man in Super League behind Warrington Wolves forward Ben Westwood, has hinted that this may be his last season, O'Loughlin has a contract option for 2019 and has no thoughts about retirement.
"People have been asking me that for about five years now," he said. "I keep saying I'll play for as long as I feel I can contribute."
O'Loughlin says players can now continue well into their 30s thanks to advances in training methods as well as recovery and treatment of injuries, while the club use a GPS tracking device to ensure he does not over-train.
Australian Steve Menzies was two months short of his 40th birthday when he played his last match in Super League, while Adrian Morley played until he was 38, as did Jamie Peacock, who came out of retirement to play for Hull KR in 2016.
"They've managed me pretty well now for a number of years," O'Loughlin said.
"The protocol in place for recovery is of a lot higher standard than when I started out 15 or 16 years ago, people look after their bodies better.
"The age of retirement creeps up due to the science and the gym work you do.
"You train a lot smarter, it's more precise training, and you come back quicker and better from operations because of the advances off the field."
"As long as my performances don’t dip and I’m still adding value to the side then I’d like to keep on playing."@seanol13 says he's keen to keep going for the Warriors! 🙌— Wigan Warriors 🍒⚪️ (@WiganWarriorsRL) April 11, 2018
➡️ https://t.co/4NECov076n pic.twitter.com/pxplVoCbOH
O'Loughlin signed a new 12-month contract last October with an option for 2019 which he seems certain to exercise.
"You're a long time retired," he said. "I'd be disappointed in myself if I hung my boots up too soon but then again you've got to make sure you're doing the right thing by yourself and the club."