Rennlist Discussion Forums   classifieds | membership | rennlist | photo album    
sponsors | upload photo | chat    
 
Go Back   Rennlist Discussion Forums > Water Cooled Technical Discussion Areas > 924/931/944/951/968 Forum
Sign in using an external account
Register Forgot Password?
Search


View Poll Results: radiator flush
Prestone "15-30 minute" super flush 3 37.50%
Prestone "100 mile or 1 week" super flush 1 12.50%
laundry detergent/soap 1 12.50%
dish soap 1 12.50%
dishwasher detergent 0 0%
vinegar 0 0%
combo with Prestone 0 0%
combo without Prestone 0 0%
other 2 25.00%
Voters: 8. You may not vote on this poll

Reply
 
Thread Tools Search this Thread
Old 12-30-2003, 11:30 AM   #1
odie
User
 
Join Date: May 2003
Location: Corpus Christi, TX
Posts: 243
Question radiator flush? soap? vinegar? detergent?

There are two different Prestone radiator flushes available. which one is preferred?

There is one that is used for a few minutes and then drained. The other is suppposed to be left in for a few couple hundred miles or a week or two.

That is a big difference. Both products are Prestone, both seem to list basically the same ingredients. What's the deal?

Also, I've seen archives saying use laundry detergent, dish soap and dishwasher detergent.

Vinegar has also been mentioned. This makes a lot of sense as vinegar will dissolve hard water, is EPA friendly and has no chemicals. Is it safe on aluminum?

I'm thinking soap for a day, followed by vinegar for a few of days will rid the system of any and all oil and crud build up.
To remove this ad, register today or login if you already are registered!

odie is offline   Reply With Quote
Old 12-30-2003, 11:56 AM   #2
Tom R.
Addict
Lifetime Rennlist
Member
 
Tom R.'s Avatar
 
Join Date: May 2001
Location: NY attitude @ Denver altitude
Posts: 9,285
Default

the laundry detergent is used when you have the oil cooler milkshake. flush it, then run it for a few days with laundry detergent to cut the grease and hopefully deposit it in the overflow tank.
__________________

On the dark side - ZZZ M Roadster
Past Porsches: Velvet Red 89 951 (51k mi, sold 6/09) UberRareRed 90 S2 (73K mi, sold 11/08)UberRareStolenRed 89 S2 (73K mi stolen 9/03), RareRed 88 951(The Duck's) StoneGray 89 S2 (Shouldn't have Sold to brother), Linen 89 NA (Was my brother's)
Tom R. is offline   Reply With Quote
Old 12-30-2003, 01:40 PM   #3
Charlotte944
Addict
Rennlist Member
 
Charlotte944's Avatar
 
Join Date: Jan 2003
Location: Richmond Virginia
Posts: 1,480
Default

I've dealt with a clogged radiator in my '87, and I had fairly decent results by using "The Works" brand toilet bowl cleaner.

You need to remove the radiator and either usurp the kitchen sink, or use a "deep sink".

Start by blowing low pressure air through the radiator fins to remove any bugs, road debris, dead cats, or other obstructions. Flush the radiator internals with clean HOT water, and then drain the radiator. As you flush the radiator use the palm of your hand to check the temperature of the cooling fins. Clogged cooling tubes will be cooler than open tubes. This will give you some idea of how badly the radiator is clogged. If more than 1/3 of the radiator is cool, cut your losses and by a new radiator.

If less than 1/3 of the radiator is clogged, add some cleaner and just enough water to almost fill the radiator. Carefully tip the radiator from side to side so the solution gets mixed and then set the radiator aside for several minutes.

As the cleaner does it's thing, the chemical reaction will cause some bubbles and foaming. Periodically tip the radiator from side to side to "stir" the cleaning solution.

Once the chemical reaction slows/stops, drain and flush the radiator, and use hot water to check for blocked tubes.

Repeat the cleaning process as necessary.

Note: This particular cleaner contains Hydrochloric Acid. Wear eye protection and rubber gloves. Clean any spills immediately. This product will also "bleach" the plastic side tanks.

I used this process on the radiator in my '87. When I started the car would overheat at the drop of a hat. I borrowed a used radiator so I could expirement on mine. I tried the "normal" radiator flush (Prestone), CLR, vinegar, and several other concuctions with little improvement.

YMMV.
Charlotte944 is offline   Reply With Quote
Old 01-02-2004, 11:41 AM   #4
odie
User
 
Join Date: May 2003
Location: Corpus Christi, TX
Posts: 243
Default

well, I gave the vinegar a try just for ***** & grins...couldn't really tell any difference, but then my radiatior looked pretty clean to start with.
odie is offline   Reply With Quote
Old 01-02-2004, 01:07 PM   #5
dualblade
User
 
dualblade's Avatar
 
Join Date: Apr 2002
Location: Long Island, NY
Posts: 1,049
Send a message via AIM to dualblade Send a message via Yahoo to dualblade
Default

i haven't actually used it yet but i bought some zerex super radiator cleaner. does it really matter if it's aluminum safe? i didn't read the bottle that carefully but it's not in the car for very long so unless it's super corrosive and actually eats away at the engine, i imagine you'd be ok.
dualblade is offline   Reply With Quote
Old 01-02-2004, 03:00 PM   #6
IceShark
Super User
 
Join Date: Jun 2001
Location: Minneapolis, USA
Posts: 5,159
Default

Be careful on what you stick in the cooling system. Dish washing soap like Dawn works fine to cut out oils and such. But powdered dishwasher soap like Cascade will be a disaster as it eats up aluminum. Just come over and take a look at my aluminum garlic press - it is really a mess from just one cycle in the dishwasher and Cascade.

I'm not sure how vinager would do to remove the hard water deposits. Probably not too good because you can't scrub the deposit. One of the metal guys could give a much better idea on how to approach. I just used the Prestone quick flush and it seemed to work OK and not damage things. Engine runs cool at ~ the first hash mark.
IceShark is offline   Reply With Quote
Old 01-02-2004, 03:58 PM   #7
951sickness
User
 
Join Date: Nov 2001
Location: San Francisco
Posts: 244
Default

I would be really interested in what is the best way to clean the cooling system after oil contamination (oil cooler failure)....for my Jetta but eh, close enough.
951sickness is offline   Reply With Quote
Old 01-02-2004, 04:25 PM   #8
odie
User
 
Join Date: May 2003
Location: Corpus Christi, TX
Posts: 243
Default

I'd say that liquid detergent or degreaser (SImple Green or any of the purple stuff) would be best to get any oil out of the system. It's good at breaking down oils and shouldnt get all foamy like I imagine dish soap would.

Vinegar is an old trick for cleaning hard water and mineral deposits from your coffee maker. Aslo good for soaking your clogged shower head.

But is a lot of the radiator build up from hard water or it it some kinda corrosion or electrolysis build up?
odie is offline   Reply With Quote
Old 01-02-2004, 04:25 PM
Rennlist



Paid Advertisement
Reply

Tags
cascade, clean, contaminated, cooling, deposits, detergent, flush, hurt, laundry, mineral, oil, radiator, soap, system, vinegar

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

Forum Jump


All times are GMT -3. The time now is 08:24 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.6.1
Copyright ę 1998 - 2007 Rennlist.com

Advertise on Rennlist - Privacy Statement - Terms of Service - Jobs