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1979 450SL
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156 Posts
Discussion Starter #1
So, as part of changing a leaking water pump, i broke down and ordered a new Behr radiator since the original looked too sorry to carry on much longer. I've since read up on de-oiling and the de-calcifying the system, and plan to use Cascade packets in distilled water, then flush a few times, then the MB Citric Acid stuff. (Sound good?) My real question is whether I should re-install the old radiator for this process, do all the flushing, then put in the new one? Seems like flushing the system with the new radiator in place might just deposit crud in a brand new radiator. It would be extra work for sure, but probably worth the effort?
 

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1973 450 SL
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Outstanding Contributor , Bob's Your Uncle!
-----'83 280 SL----- 5 speed....The PIG
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29,197 Posts
Pretty much what I did 10 years ago.

My rad needed a recore at the time and had probably never had a flush.

Tide powder....multiple flushes and then MB citric powder followed by multiple flushes.

I then removed the rad for a recore.

New thermostat and all new hoses. ALL of them.
 

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'80 450SLC Afro RHD Ikonengold
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2,864 Posts
Pretty much what I did 10 years ago.

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Tide powder....multiple flushes and then...
Nobby,

did you mean Tide powder, like a common front loader 90C washing powder? (I googled it)

I am looking into system clean and washing powder actually makes sense as it does not foam and it cleans the mpossible (used in the past for car wash, particularly white paint)
 

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Outstanding Contributor , Bob's Your Uncle!
-----'83 280 SL----- 5 speed....The PIG
Joined
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29,197 Posts
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