Best fluid for torch coolers

by Erik
(Montreal, Canada)

Coolers for TIG torches need fluid.
What is the best mix?
Importance of distilled water?
Will running with distilled water only ruin the pump because of no lubricants and rust inhibitors?
Can Ethylene Glycol be used with distilled water?
Any good advice is welcome.


There is a bunch of discussion on this.

The best and correct thing is to use Coolant specifically designed for tig coolers that has a low mineral content and therefore low conductivity so that high frequency start current will be more efficient.

That said, they price it like liquid gold.

I have been using RV coolant for about a year now in one of my coolers and it it seems to be working fine and has not gelled or become funky.

Its inexpensive and easily available at stores like autozone or northern tool,

Comments for Best fluid for torch coolers

Average Rating starstarstarstarstar

Click here to add your own comments

Dec 25, 2011
use of rv antifreeze NEW
by: Anonymous

plese read lable on container some rv antifreeze are flammable!!! we use rv antifreeze in our water fire extingushers we carry on our service trucks and have to be careful because of this

Oct 21, 2011
freezing fluid?
by: welder

Will fluid freeze? I have my TIG machine in my barn and don't want to damage it.

Oct 14, 2011
Best fluid for torch coolers
by: Ron

I have preasure regulated water running into my Miller 300 tig welder and then down the drain.

Is there any reason that tap water can't be used?


Click here to add your own comments

Return to tig forum.