coolant flush without removing thermostat

[@RA-sf7ws]

Once i bought a vehicle, the previous owner didn't fill it with coolant , only water , when i filled it with coolant , after about 2 or 3 days it started leaking from several places , the previous owner was using hard water which made a layer of deposits inside the cooling system that stopped any leaks , when i added coolant it started cleaning the deposit layer which made the coolant leaks

[@fixing.automotive]

Thanks for sharing