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Old 08-15-2012, 08:50 PM   #1
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engine degreaser to clean radiator ?

any one use engine degreaser to clean there radiator ?
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Old 08-15-2012, 08:54 PM   #2
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To clean the outside of radiator for slobber? Yes, I did that but limited access made it difficult. I used the bio-degradable type and sprayed it on and left it for 30 minutes and flushed with fresh water. It did remove some of the gunk but it still needs more. I am now looking for a radiator shop that will steam clean the outside and flush the inside. In central Texas.

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Old 08-15-2012, 08:58 PM   #3
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which brand is bio degradable? i want to use engine brite seems to work better , yes its for the slobber i got hot a few times running in francionia notch an the poconos
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Old 08-15-2012, 08:59 PM   #4
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Used it to clean the CAC. Simple Green wasn't strong enough to get er done.
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Old 08-15-2012, 09:28 PM   #5
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I do not remember the brand that is bio-degradable but they are all on the same shelf at the auto parts store. Just look for the one that says it is not petroleum based. Like the citrus based ones. And I have read here on the forum that Simple Green is not good for the aluminum on a radiator? I have no personal experience with Simple Green on a radiator. Hope this helps.

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Old 08-15-2012, 11:45 PM   #6
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Engine Brite is not what is used to be.
If your greasy/oily/ you'd do best with a garden sprayer of #1 or #2 diesel fuel
Spray it. let it soak, respray if need be and then wash
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Old 08-16-2012, 12:47 AM   #7
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"fxdave"....Here some things you should know. First, check your radiator. On my Monaco, the radiator and Charge Air Cooler (CAC) is stacked, one on TOP of the other. If this is what you have, cleaning will be much easier.

If your radiator and CAC are sandwiched, one in front of the other, you need to get a spray wand that you can get between the two to clean. You usually have to come in from the bedroom and clean/spray from there.

Before I even start, I open up the bedroom floor so that I can see the front of the radiator and CAC. I use one of those long three finger tools with the push button to pull all of the trash out of the area at the base of the fan shroud. I find, newspaper, leaves and plastic wrappers each year.

Once I have the trash cleaned out of the shroud corners, I use a garden sprayer to spray the entire surface. I then spray the backside of the radiator and CAC. After it's soaked for awhile I use a 1/2" piece of thick wall conduit, about 4' long, with a garden hose female fitting on one end and I hammer the pipe almost closed at the other end. This gives me a good water sprayer that I can lay under the rear corner of the coach and spray the entire radiator and CAC. I then start the engine and allow the fan to push the water through as I continue to spray water with the pipe I made.

I can't tell you what to use as a cleaner. I used Dawn diswashing soap. It's one of the best grease desolvers.
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Old 08-16-2012, 05:06 PM   #8
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I always use Gunk original engine spay cleaner and not the Engine Brite . I find the Gunk Engine Brite does not penetrate enough when sprayed on into the vanes. Simple Green is sure not strong enough
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Old 08-16-2012, 05:22 PM   #9
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Rear rad here. I have the wife run a flashlight around the back of the rad while I watch from the access panel inside. If I can't see the light coming through I make a mental note of the areas that the light didn't shine through. I then use my garden attachment which I put dawn dish soap in and hook up the hose and spray from the rear concentrating on the areas I noted. What I have found in the 8 years I have done this is that normally the "clogged" areas are the outer edges and outer bottom and top. The center is usually clean. After awhile I will then switch over to straight water with a hose nozzel to get all the soap out. I also will crawl under her to get the other side cleaned. I find that if I stay off the dirt roads It doesn't get that dirty.
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Old 08-16-2012, 07:02 PM   #10
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I usually sprayed the oil clogged radiators with simple green and let it sit for about 1/2 hour. Got the hose ready and then started the engine. Sprayed the water all around the radiator and let the engine fan drive it through the fins.

Warning, make sure of the following ... or else:

1. your wife's brand new SUV is nowhere near or behind the coach.
2. make sure your wife is NOT standing behind the coach trying to yell "dinner is ready" when you start the water spray.
3. do not attempt this at home with the coach backed up to the garage and the garage door opened.

Other than a few drawbacks, this method works great!
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Old 08-16-2012, 07:19 PM   #11
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Identifying the clogged areas done pretty easily by holding up a small rag or something (I've used a sanitary glove as well?) in back of the rad. with the engine running. It should blow straight out with the engine idling at 1000rpm or so.

Mine was pretty gunked up when I got it. PO was clueless regarding the slobber tube output. I've used Gunk degreaser, kerosene, and lots & lots of water and patience. Nozzle on garden hose can be pretty effective at close range. Crawling right into the engine compartment so you can see/reach what you're doing. Flashlight in hand is a big help. I've worked from both sides, engine running and not. Think I have it pretty well cleaned out now. Rag will blow straight out no matter where I hold it!
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Old 08-16-2012, 07:46 PM   #12
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Just learned some again on here. Great idea to use a rag, the wife will really like this. Thanks
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Old 08-16-2012, 09:03 PM   #13
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At an A/C supply they sell a foaming liquid used by A/C service people to clean the coils on a compressor and evaporator coils, spray that on the radiator, it foams, cleans and degreases, and then flush with plenty of water it does a great job and it does not damage the aluminum. Do flush with plenty of water. It comes in full strenght and it must be diluted at the right proportions (fllow instructions on bottle)
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Old 08-16-2012, 09:18 PM   #14
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Mix Simple Green with Dawn dish liquid, 50-50, and spray it on heavily to the entire stacked radiators package. Start the engine and let the fan pull it through. Turn the engine off. Spray another heavy coating onto everything and let it sit 15-30 minutes. Then flush heavily with clean water.

I also use a pressure washer but with caution. I won't suggest it as others may not be as educated on the proper use of pressure washers and they may end up damaging their radiator, etc.

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