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Swepco · 08-21-2008, 05:02 PM

Craig,

Was this picture taken before or after you put the RMI-25 in the system?

At any rate, after doing some research with others in the know, it seems that coolant system filters are pretty much frowned upon in automotive applications for the simple reason that if they get plugged up, the flow might be restricted so much that it could cause damage to the engine from overheating.

In the Heavy Duty Trucking and Construction Industries, engines are equipped with water filters by the oems and are serviced on a regular basis, along with the oil filters and fuel filters. I'm not sure if one of those types would be something you would want. Keep in mind that those units are being serviced regularly and would not have the chance to get into the condition depicted in the picture you sent. After checking with a couple of others in the automotive supply business, they really feel that it would be dangerous to install a filter at this stage of the game, and recommended that you continue to use the RMI-25 and drain several times to see if the material coming out is reduced each successive time you do that. I know this sounds really tedious, but a lot of emphasis was given on the side of being cautious.

My take on it would be that after you are relatively sure that most of the rust and corrosion has been cleaned out and you still want to install a filtering system, to try to get the type of filter which can be cleaned, like a stainless steel mesh, which can be mounted somewhere under the hood on the heater hose line going into the heater from the block. It should be a readily accessible either cartridge or some similar type - but keep running the RMI-25 to continue the cleaning action. RMI-25 will also lay down a protective coating to help prevent further rust and corrosion, but if that is all that is holding the system together, you are almost sure to develop a leak somewhere. Steel soft plugs, if they are old, will probably be one of the first things to go. Hopefully all the stuff coming out of the block will not plug up the radiator and heater core - which then opens up another whole set of problems. Another thing to remember is that the RMI-25 must be circulating to work - in other words, you can't just pour it into a system and not run the engine / water pump.

I think you have a "catch-22" situation there - this might not be the information you were looking for, but it's the best I can do.

Here are a couple of links which you might find interesting:
DF Sales & Marketing
DF Sales & Marketing
Good luck!

08-21-2008, 05:02 PM	#5 (permalink)
Swepco Oil Moderator Join Date: Apr 2007 Member Number: 207 Posts: 62	Re: Summer Cooling System Maintenance Craig, Was this picture taken before or after you put the RMI-25 in the system? At any rate, after doing some research with others in the know, it seems that coolant system filters are pretty much frowned upon in automotive applications for the simple reason that if they get plugged up, the flow might be restricted so much that it could cause damage to the engine from overheating. In the Heavy Duty Trucking and Construction Industries, engines are equipped with water filters by the oems and are serviced on a regular basis, along with the oil filters and fuel filters. I'm not sure if one of those types would be something you would want. Keep in mind that those units are being serviced regularly and would not have the chance to get into the condition depicted in the picture you sent. After checking with a couple of others in the automotive supply business, they really feel that it would be dangerous to install a filter at this stage of the game, and recommended that you continue to use the RMI-25 and drain several times to see if the material coming out is reduced each successive time you do that. I know this sounds really tedious, but a lot of emphasis was given on the side of being cautious. My take on it would be that after you are relatively sure that most of the rust and corrosion has been cleaned out and you still want to install a filtering system, to try to get the type of filter which can be cleaned, like a stainless steel mesh, which can be mounted somewhere under the hood on the heater hose line going into the heater from the block. It should be a readily accessible either cartridge or some similar type - but keep running the RMI-25 to continue the cleaning action. RMI-25 will also lay down a protective coating to help prevent further rust and corrosion, but if that is all that is holding the system together, you are almost sure to develop a leak somewhere. Steel soft plugs, if they are old, will probably be one of the first things to go. Hopefully all the stuff coming out of the block will not plug up the radiator and heater core - which then opens up another whole set of problems. Another thing to remember is that the RMI-25 must be circulating to work - in other words, you can't just pour it into a system and not run the engine / water pump. I think you have a "catch-22" situation there - this might not be the information you were looking for, but it's the best I can do. Here are a couple of links which you might find interesting: DF Sales & Marketing DF Sales & Marketing Good luck!