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1994.5 - 1997 7.3L Power Stroke Diesel  

descaling radiator

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Old Aug 31, 2010 | 08:49 AM
  #1  
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descaling radiator

My 94 has the old style all metal radiator and since I got it and replaced the stuck wide open for years thermostat it's started scaling up on me. I was running prestone premixed in it for a couple years but about 6 months ago I switched to fleetguard with dca already added and distilled water. I also recently put on a full flow coolant filter in the line to the heater core trying to clean it out.
I was just adjusting the coolant and looked down in the top of the radiator and about half the tubes I can see are plugged with scale. It's getting a little warm according to the factory gauge when I pull long hills too and the camper is on. Should I just go have the radiator cleaned out at a radiator shop or is there any additive that can safely descale it these days? Flushing it isn't an option. we're on a farm and have really hard water and really soft water in the house. one will make it worse and one is a little on the salty side. That can't be good.
 
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Old Aug 31, 2010 | 10:31 PM
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I'm surprised to hear with distilled water your getting scale! I don't know for sure but with the older style radiator I think that a radiator shop can boil it out.
 
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Old Sep 1, 2010 | 12:13 AM
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I think you're right oldbird, they can pull the tanks, boil the core then "Rod" out the tubes. Finished product will be just like new.
Rog
 
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