safe cleaning tricks to rid calcium deposits n radiator... -  

Go Back > Repair & Restoration > Engine > Small Blocks

LinkBack Thread Tools Search this Thread
Old July 2nd, 2011, 01:16 PM   #1
girl powah!!!
Join Date: Feb 2007
Location: Houston, Texas
Posts: 25
Arrow safe cleaning tricks to rid calcium deposits n radiator...

Hi all,
So my radiator in my 71 cutlass supreme has A LOT of calcium deposits. Id like to keep the original radiator and not buy an aftermarket one, so I wanted to know if anyone knows of a SAFE method to clean out the deposits?

I read ppl used vinegar,but then read that using vinegard (due to the acid) would cause heavy rusting to occur.
Someone then suggested after using vinegar to flush the system out w/a mixture of water&baking soda to neutralize the radiators metals to prevent the rusting issue.
Anyone try this?????

I also read ppl using limesclae cleaner..

Anyone here use either of the above methods w/successful results?
Or anyone have other safe cleaning alternatives?

By the way,I was told rodding causes leaks&the guy didn't want to take the chance to rod my radiator due to its age hence why I'm asking for othe solutions

Last edited by 71CutlassSupreme; July 2nd, 2011 at 01:19 PM.
71CutlassSupreme is offline   Reply With Quote
Old July 2nd, 2011, 01:30 PM   #2
Just an Olds Guy
Allan R's Avatar
Join Date: Jul 2008
Location: Edmonton, Alberta.
Posts: 20,138
I'm sure that vinegar/water will clean some of it. I've been thinking of cleaning mine too. If I do though, I'll probably take it out so I can paint it after I'm done, or take it to the rad shop if something goes horribly wrong. I saw a rad comb on the web I want to get that will straighten out all the rad fins and take any bugs caught there out. Seems like just when you want to do something simple, there are lots of other things that 'pop up'. I was thinking of trying CLR. It works really good on my shower and taps + I've got it on my hands and it hasn't created a trip to the Dr.s office.

One thing you might want to think about if you're doing the rad? The heater core might also be heavily encrusted too. I know you can replace that but not as easy as running a flush through it. Have you looked at the Prestone rad flush kit to do the rad? I have one in the garage, just that I'm not sure if I want to cut a heater hose to install the tee.
Allan R is offline   Reply With Quote
Old July 2nd, 2011, 04:14 PM   #3
Registered User
Indy_68_S's Avatar
Join Date: Oct 2009
Location: Central IN
Posts: 1,090
Originally Posted by 71CutlassSupreme View Post
By the way,I was told rodding causes leaks&the guy didn't want to take the chance to rod my radiator due to its age hence why I'm asking for othe solutions
Rodding ?

I'm not sure how caked up your rad is, but I'd think running some CLR or vinegar wouldn't hurt it. Its just plumbing. Anything that the vin/CLR disolves wasn't meant to be there. I wouldn't run vinegar or CLR in it while attached to rest of the cooling system...and I'd make sure you flush it well w/ clean water when done.

Treat it like the coffee maker ! Run vinegar thru it and flush with clean water !
Indy_68_S is offline   Reply With Quote
Old July 3rd, 2011, 07:38 AM   #4
oldcutlass's Avatar
Join Date: Oct 2009
Location: Granbury, Texas
Posts: 24,028
I use plain old tried and true prestone flush. I run it thru the whole system including the heater core. It's simple not expensive and generally works.

Please note that if your cooling system is really caked up, a radiator shop will most likely be your next stop.

After your done rinsing your system really well, add a 50/50 mix of coolant and water, your good to go!!
- (other) Eric

There is nothing that can't be solved with a suitable amount of explosives!
NTOC #746
1967 Oldsmobile Cutlass 468/ Turbo 400
1963 Plymouth Fury (Sold)
2006 Mustang GT (Momma's)
2006 Mustang Coupe(son'S)
oldcutlass is online now   Reply With Quote

Similar Threads
Thread Thread Starter Forum Replies Last Post
Any tips on cleaning a radiator during an engine swap? Larrys'66 Big Blocks 24 January 23rd, 2014 12:27 PM
Sticky goey intake deposits problem.... 1970-W30 Small Blocks 0 August 26th, 2013 04:03 PM
calcium deposits in my radiator...please help a damsel in distress 71CutlassSupreme Small Blocks 17 October 29th, 2011 01:30 PM
Cleaning out the garage, need to get rid of stuff. MrLightning Parts For Sale 1 August 28th, 2011 01:22 PM
Radiator Cleaning Advise Wanted cutlass47 General Discussion 11 March 13th, 2009 06:50 PM

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -7. The time now is 06:51 PM.

All content Copyright © 2008 by Internet Brands, Inc.