Cleaning coolant systems

[Genie47]

Its on one of the radiator hoses. Don't attempt if you don't know.

[Yeobh]

Avoid at all cost using laundry powder - not much cleaning power on cast iron and aluinium - generate to much foam. You need much more running water to clear them 100% from the system. Detergent formulated specially for disc washing machines is cosndered the best by many praticising US mechanics.