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What is this pink and orange stuff in fouled oil boiler?

Steamback
Member Posts: 37
I'll admit it, I opened up my first old oil boiler today. What really intrigues me is the pink and orange mess at the bottom of the boiler chamber. What is that?












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Comments
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That's just nasty.
What model and age is the Buderus? I've never seen that HX design.0 -
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yeah, that's been running terrible0
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That's definitely the product of incomplete combustion. And yes, it is the dye in the oil that turns it that color. Proper cleaning and combustion testing will get that boiler chooching again.0
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