Boutique caps in oil... reliable?

@erik_squires 

There was a thread that I contributed to just yesterday where I mentioned that I had an expensive Duelund capacitor that leaked, and I got no satisfaction from Duelund or Parts Connexion. I had discovered the leak when I opened the DAC to change a tube. I left it in after cleaning up the leaked oil, and a few years later when I sent the DAC in for an upgrade, there was no more leaked oil, and the technician tested the cap, and i was still up to spec, so no harm done, I guess.

Erik,

As you mentioned wax, no issues with Jupiter HT.

Running now for 9 years and are close to signal tubes.

No experience with oils.

      Back when they were a couple hundred bucks each; I replaced the four coupling caps, in my tubed monoblocks, with Duelund's .22uF 630V, CAST PIO, pure Cu foil's.

      Within six months I noticed a tiny puddle under one of the amps and called Parts Connexion, who instructed me to return all four.

      Apparently: Duelund had a bad run and was replacing any parts from that batch gratis.

      Returned the baddies and received the new caps within the same week.

      I was absolutely happy with their caps and issue resolution.

                                It's hard to be perfect all the time! 

     Some may remember the Black Gate caps from Rubycon.   MAN, how I miss those babies!

      Anyway: here's a funny, cap-failure flashback, related to Rubycon (an EXCELLENT manufacturer), their non-solid, aluminum electrolytics and a major industrial espionage fail:

     btw: It's been a few years (at least eight) since those Duelunds were replaced.

                     Still: wonderful reproduction/no need for Pampers.