Wet box transducer fluid

 The refit on the big duck is coming along rather well. I've just epoxied n glassed a big get f@*#$#d tranny box into my starboard side hull and now I need to fill it with a suitable liquid. Antifreeze seems to pop up a fair bit , but being in this part of the world antifreeze is the last thing I can lay my hands on. Any ideas ladies and gentlemen ? 


 My wife understands why I clean my rods n reels in the shower....


sunshine's picture

Posts: 2258

Date Joined: 03/03/09

Isn’t antifreeze simply glycol

Wed, 2020-03-25 17:05

As in radiator fluid the green stuff, I stand to be corrected but pretty certain that is the case  

scubafish's picture

Posts: 869

Date Joined: 15/08/12


Wed, 2020-03-25 17:07

Antifreeze coolant that is used in your radiator .
Do not water it down (straight)



Posts: 174

Date Joined: 08/03/09

Propylene Glycol is recommended

Wed, 2020-03-25 18:03

by Airmar, you can buy it at any vaping store for about $10 for 500ml.

deep south's picture

Posts: 158

Date Joined: 28/12/16

As above

Wed, 2020-03-25 18:26

 Propylene Glycol is the go got mine from the local motorbike shop


The next time i see that jig will be in the mouth of something big !!


Tim's picture

Posts: 2464

Date Joined: 26/09/06

Right one

Wed, 2020-03-25 18:30


Be sure to get the right one

Airmar recommends using only propylene glycol to fill the tank

Engine coolants tend to be made from ethelyne glycol and can cause damage to the transducer.

Make sure you check the make up of it before use.

I think I have a bottle here I can get a pic of when I bought 4 litres

Posts: 96

Date Joined: 27/07/16

I've used distilled water

Wed, 2020-03-25 20:08

I've used distilled water with a bit of disinfectant to to stop an bacteria growing.

Posts: 887

Date Joined: 19/06/14

Thanks to all of you

Wed, 2020-03-25 20:53

Looks like I'll be hitting the local motor bike shop in the morning. 


 My wife understands why I clean my rods n reels in the shower....


Posts: 546

Date Joined: 24/04/11


Wed, 2020-03-25 21:01

I used Silkolene pro cool.

I got from SuperCheap (I think).

It is a propylene glycol. I mixed it 50/50 with distilled water but thats because i am tight ass.



Posts: 1

Date Joined: 25/03/20

I've been running distilled

Thu, 2020-03-26 17:29

I've been running distilled water in mine for around 6 months now with no issues. Will be switching to propylene glycol though because I'm worried about algal growth over time.

Bing's picture

Posts: 149

Date Joined: 13/02/11


Fri, 2020-03-27 16:40

Propylene Glycol as recommended by Airmar. Can also get it from home brew shops, that's where I got mine.

Posts: 887

Date Joined: 19/06/14


Sat, 2020-03-28 07:03

Spoke to the supplier of the wet box and they said distilled water is the way to go . Makes my life a little easier as getting propylene in C'von was a little too tricky. 


 My wife understands why I clean my rods n reels in the shower....