I used to purge because everyone told me I had to. But I got lazy a few times and filled up without purging...and now I never do. Havn't in years in any of my lighters and they all work perfectly fine.

I had a drunken adventure last weekend that ended up with me in the ocean around 3am and I had my favorite Bugatti in my pocket. It wouldn't light so I just took it apart and let it air for a few days. Works like new again. I don't baby my lighters. If they stop working I buy a new one