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Author Topic:   how to clean inside of radiator
Dirt Maniac

Total posts: 119
posted September 10, 2005 12:26 PM  
I run just straight distilled water, but looking inside the radiator, the water turns a cloudy orange after running a few minutes. I drained the water, and found some orange "scum" lining the inside of the radiator and thrrmostat housing. I ran water through the system, but the orange stuff isn't coming off. Is there anything I can run through the radiator to clean it?

Dirt Forum Champ
Total posts: 5390
posted September 10, 2005 03:32 PM  
they sell a powedered radiator cleaner that works really good. Probably find it at you rlocal parts store. It has two parts, one is the cleaner and the other is a nuetralizer. Run the cleaner in it for a while, then put the nuetralizer in it and run it again. Then drain and flush the system out good and refill with your distilled.

Dirt Roller

Total posts: 14
posted September 11, 2005 06:31 AM  
cascade dish washer soap works well too.drain rad. and block.add some water then add about half a pop can of soap.then fill with water. heat engine up to temp a couple times. drain and flush.good idea to let motor cool down before flushing. don't want a cracked head. may need to do this porcedure a few times untilit's clean.

Dirt Forum Champ
Total posts: 2007
posted September 12, 2005 10:22 AM  
make sure if you use an aluminum radiator the cleaner you use is safe for aluminum. Otherwise you could be hurting the radiator more than helping it.

i would guess that the orange stuff is rust. Do you run a additive like water wetter? i don tknow if it actually helps it run cooler but it will lube and protect the pump and everythign from corrosion and rust.

Dirt Maniac

Total posts: 119
posted September 12, 2005 05:20 PM  
I had been running water wetter, but the last couple of months I haven't. I just bought some again, hoping it will help!

nine finger
Dirt Forum Racer

Total posts: 76
posted September 12, 2005 07:43 PM  
food grade vinegar will clean it out just fine. do not dilute and use a pump to shure to remove the vinegar before running.

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