Cleaning Radiators from the shop.

RogueTadhg

[H]ard|Gawd
Joined
Dec 14, 2011
Messages
1,527
Hey guys! I'm trying to find some other way than CLR to clean new radiators. I used CLR and spent a gratutious amount of time and money cleaning and flushing.

I'll be cleaning two 560 Monsta Radiators.
 

Kardonxt

2[H]4U
Joined
Apr 13, 2009
Messages
3,219
I've never had any problem with just filling rads with warm water and shaking them up \ pouring them out, until the water comes out clean. I've heard of people just connecting them to a tap and letting warm water flow through them for an hour, or making a temporary loop with some vinegar added. I'm not sure what effect vinegar may have on o rings and stuff so I never bothered.

If you want to be thorough and use CLR still, I would recommend rinsing with water first until you get the bulk out and then a single rinse with CLR. No reason to spend a fortune on gallons of CLR if you can get the bulk of the stuff out with plain water first.
 

Dullard

2[H]4U
Joined
Jun 28, 2012
Messages
3,972
Or at least dilute the CLR down to 10:1 or so, I don't think you'd need full strength.

But I always just used the method mentioned above, fill it with warm water, shake it around, dump it out, repeat a time or two.
 

Zarathustra[H]

Fully [H]
Joined
Oct 29, 2000
Messages
30,716
As kardonxt says, the tap method is probably the easiest.

Just flush through radiator into drain for a while until clean. Warm water may be more effective. If you want to be extra careful about contaminants, just rinse out after with distilled water.
 
Joined
Mar 4, 2019
Messages
44
I would do the final rinse with CLR or distilled water to get all the minerals out. If you can make it happen, rinse with automotive antifreeze or something like that. Not sure I'd use green, but maybe VW G12 coolant or something like that.
 
Joined
Apr 5, 2016
Messages
2,132
Mayhem's Blitz part 1 is a product specifically designed to clean new PC watercooling radiators. The first time I used it, it was on a radiator that I had "cleaned" previously with a hot water/vinegar mix. I was startled at the amount of crap that came out of it with Blitz.
 
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