Cleaning radiator

[plowhand]

Does anyone have a method of cleaning a radiator or does it have to be done at a shop?

 

[SVcummins]

I?ve flushed them with laundry detergent sometimes it takes 4 .or 5 times but it?s cheap and easier than pulling the radiator I just fill it in the morning and drain it at the end of the day

 

[casecollectorsc]

Put 3-4 gallons of vinegar in the radiator and fill with water. Use the vehicle like always for a day or two and flush.

 

[Brown Swiss]

Depends on what is in it, if limed up best bet is to recore it or a new one!

 

[fusion]

white vinegar - water 50/50
fill up run till it gets hot leave sit over night
then drain and see what it looks like
may have to repeat

 

[Michael Soldan]

I have filled a rad with CLR and let it sit. Lots of effervescence as the lime disintegrates , then when it appears clean I take the garden hose and flush it.

 

[old]

Fill it with vinegar and then run it till good and warm let cool and drain then back flush by way of the block drain

 

[dr sportster]

CLR

 

[rlp in Co.]

I have taken the plastic tanks off and used a stiff rod to remove the crud then daubed on silicon and put it back together. Still working good.
I got this brain storm this summer to try something new. I drained the anti freeze out and filled my radiators with distilled water. I figure that it will absorb the calcium. Next fall I will drain out the water andfilter the anti freeze thru a paper towel and put it back in. We'll see if it works.