Is this rusty rad tail a cause for concern?

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Hi, simple question really, about 5 years ago I replaced 9 radiators in our house. This one pictured below is situated in the sitting room and I’ve just noticed some corrosion where the rad meets the valve. There are no signs of a leak. Another rad upstairs has the paint starting to flake and some corrosion appearing in the same location but not nearly to the same extent. Should I be concerned?

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Obviously it isn't very pretty, but the boss the tail screws into is strong enough.....maybe it's had a weep at some time, and all radiator paintwork isn't well primed.
It's far more likely to leak at the crimped edges on the bottom.
John :)
 
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Do you think that in a couple of months, when my CH will be off for the following 4 months, I should remove the rad, remove the tail screw, clean it and and re-fit it with ample PFTE this time before re-assembling the whole thing with new olives? It would also give me a chance the drain the system and refill with inhibitor.
 
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Wire brush and some white hammerite. The paint probably flaked when the plugs were removed and they have surface rusted over time. If the joints are dry then no need to re-make, check them when the system is cold.
 
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The amount of rust is minute, no significant flaking, no moisture on the floor, many rads are similar. In the nicest possible way, find something worth worrying about.
 

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