Guv Bob wrote:

I figgered some of you fellers might something like this on a machine coolant. Has anyone ever installed a coolant filter in an auto radiator hose and had good luck with it? They use them in diesels and antique cars.

These are 2 that I found online. Don't no nuthin about 'em except they are both $70. That's a little high to try something out. I would go for it if it were in the $20-30 range.

Tefba Inline Radiator Coolant Filter
http://www.tefba.com/
Unscrew the top and change the filter element without having to break the line.

http://www.ganofilters.com/
Clear plastic sounds like a good idea but I would probably go with the metal housing.

I don't know the filter rating for these two, but this feller (below) says 200 micron (77 mesh) is fine enough. A human hair is about 70 microns.

"It only needs to filter particles of about 200 microns (0.0078 inch) and larger in size. Filters that trap extremely small particles are not necessary and are more likely to restrict flow to the point of overheating."
From "Repeat Component Failure Requires Heroic Efforts"
By Kevin S. McCartney
https://secure.i-toolkit.com/www_cia...CONTA&k=1&pp=1

Is this for a vehicle or machine coolant?

For machine coolant I use an ordinary household 9" filter sump with the
basic 5 micron sediment filters and it works well. You mostly filter
chips and they don't clog it readily, and the household filters handle
plenty of GPM.

For vehicle coolant there are a lot of options, but you have to be
careful which you select as some intended for semis and the like include
SCA (supplemental coolant additive) tablets in them which are not
appropriate for smaller engines.