What do you put in a wet box..

[rtp1984]

Just built a wet box in the Yalta for my P66.
Tested it on the weekend, and it worked brilliantly. Now I only used sea water in the box to test, but don't want the tranny sitting salt water its whole life.
What should I use instead?

Thanks
Rob

[DAVE_S]

I just us tap water , been there for 8 years without any problems.

[gofishin]

When I read the title I thought 'what the...' [emoji15]

But then it all made sense [emoji1]

When I was using one, salt water


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[lethal098]

Parafin oil, or vegetable oil as an alternative,

[chocolatemoose]

KY jelly or baby oil.............................what??? why are you looking at me like that?

[brett62]

Moose, we use to use transducer oil years ago for wet boxes. Just need to match up what material you hull is to make sure you don't use something that will degrade the material. In the alum hulls we used Parafin oil as lethal098 has mentioned.

[scottar]

Parafin oil is probably ok but do not use vegetable oil. It attacks the potting compounds used in transducer manufacture and can make the transducer swell up and crack. Tap water will work but unless the seal is perfect may require periodical top ups which isn't really an issue - there is usually plenty available. Seawater will work and is generally the easiest thing to get hold of when you are on the water if you realise your wetbox has dried out a bit but it will go pretty rank and smelly after a while. Airmar's literature usually recommends a glycol mixture but the stuff is pretty toxic and realistically is not required for Australian conditions. They recommend it for it's anti-freeze properties but most places in Australia don't get anywhere near cold enough that the contents of your wetbox will freeze and do damage. For me personally - I would stick with tap water.

[Darren J]

I had been going to use glycol based on all the Airmar advice, but maybe I should just be using tap water. Actually I think they recommend glycol free anti-freeze (I am pretty sure), maybe that does not have the same toxicity as the normal coolants??...

... Just opened my M260 box. It says " propylene glycol (non-toxic anti-freeze)".

[hainsofast]

A woody is what I would put in a wet box

[gofishin]

... Just opened my M260 box. It says " propylene glycol (non-toxic anti-freeze)".

Yes, the 'toxic' glycol is Ethylene glycol, as used in car radiators etc.
Propylene glycol (PG) is a lot more 'friendly', and is used widely in cosmetics - so must be ok [emoji15]. An even 'more friendly' grade of PG is commonly used as a secondary refrigerant (cooling medium) in food processing plants. It is readily available in 20 & 200L drums, but that's a bit too much for this purpose! Not sure where you could buy it in 1L containers, but try a chemist etc. might be exy though.
cheers
Brendon


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[scottar]

Seems like a waste of a good bourbon.

A woody is what I would put in a wet box