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I assume a previous owner ended up mixing two separate coolants when adding some, as I’ve found a little bit of sludge in my coolant system. My water pump also had lots of rust in it, so I’m de-rusting that right now.
As for the engine, it has both some sludge and a little rust. What would you guys recommend I do? Can I just leave it, run distilled water through the system once I get the thing running, and wait a week or so before switching to coolant, basically the usual procedure?
Here’s from where the water pump connects
If needed, I can use my endoscope to get a better view.