Cleaning Internal Radiator Residue

phpCypher · 05-14-2006, 10:00 PM

I am setting an automotive radiator for use in my wc system, and have noticed some whitish/yellowish residue on the inside of the radiator

Does anyone know how to remove/clean this stuff off ?

The rad core is aluminum, with poly endcaps.

It's from a 1993 Acura Integra.

bobkoure · 05-15-2006, 08:23 AM

The few I've used I've just taken to a radiator shop, with good results. I know they used to use oxalic acid - and may still, but a lot of "standard" chemicals have disappeared (IMHO a good thing - I'm a lot more interested in breathing and drinking potable water than I am in overclocking my PC).
For a home treatment, I'd try straight white vinegar, then rinse well with distilled water.

05-14-2006, 10:00 PM	#1
phpCypher Cooling Neophyte Join Date: Apr 2006 Location: Sin Diego Posts: 6	Cleaning Internal Radiator Residue I am setting an automotive radiator for use in my wc system, and have noticed some whitish/yellowish residue on the inside of the radiator Does anyone know how to remove/clean this stuff off ? The rad core is aluminum, with poly endcaps. It's from a 1993 Acura Integra.

05-15-2006, 08:23 AM	#2
bobkoure Cooling Savant Join Date: Feb 2003 Location: USA - Boston area Posts: 798	Re: Cleaning Internal Radiator Residue The few I've used I've just taken to a radiator shop, with good results. I know they used to use oxalic acid - and may still, but a lot of "standard" chemicals have disappeared (IMHO a good thing - I'm a lot more interested in breathing and drinking potable water than I am in overclocking my PC). For a home treatment, I'd try straight white vinegar, then rinse well with distilled water.

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