Careful if buying Purist Audio Neptune fluid cables.


About two and half years ago I bought the 3 meter pair RCAs Neptune new from an authorized dealer. 
Recently the cables develop the following. First, they are both now 2/3 empty, though they appear to still sound the same. Except, second, they now give me quite a pronounced background noise heard thru both speakers and independent of the volume. I compared them regarding the noise with Tchernov Reference MKII and WyWires Platinum RCAs, the former are 1 meter pair and the latter are 4 feet pair. They both also give me some noise but it is five-ten times lower in intensity and below the level of either vinyl playback or tape. Tchernov and Wywires gave exactly the same noise level.
I even ran deck directly to power amp to eliminate the preamp and additional cable, the results were exactly the same.
Though the Neptune is 3 meters long, I don't think it should do this, and I don't think that it should lose so much fluid so quickly. When the fluid is gone, and I suspect it will happen soon enough, things will become worse. I talked to the dealer I bought it from, he said that the Neptune was designed to work normally even if there was almost no fluid left. Maybe. But what happens when there is no fluid at all ? I don't want to wait and find out. And this strong background noise should not be there.
I sent a message to Jim Aud, designer and owner of Purist Audio Design, and asked him to take care of it. I will post his reply if and when I get one.
The dealer was of no real help, he did offer me upgrade to Purist Corvus 1 meter pair for $1075 plus my Neptune as a trade-in. I paid enough for the Neptune and not going to pay a cent more, except shipping to Purist if I have a chance.
inna
It would not be a problem for me to have the cables refilled every five-seven years for a moderate charge, but not new cables after less than three years.
No, I will not communicate with that dealer again let alone buy from him. I decided not to reveal his name but I think this is a debatable issue. People buying high end, whatever it is, expect much better performance and attitude, and they are right, we don't want money takers and box movers.
The Neptune has been packed for a trip and I already miss it. WyWires Platinum on preamp and Tchernov on the source sound nice but not like when the Neptune is on preamp and WyWires and Tchernov on two sources. I usually have WyWires on the tape deck and Tchernov on the phono but it can be reversed, no big difference, still I slightly prefer WyWires Platinum, though Tchernov has just a little more poweful delivery. I simply listen to deck more often, and I record everything with Neptune cables, of course.

The solution (no pun intended) is to make the fluid more viscous.
The solution is to not by cables with fluid in them. Period. IMO. 
If that's what one likes there might be no substitute for Neptune or there is but extremely expensive. Echole top models come to mind, as an example.