04-06-2016, 08:34 AM
The heater matrix can contain "rust mud" as can the block.
Drain and refill with clean water. run to temp or for a day normal use in summer ok, then repeat.
A hose pipe can flush and reverse flush rad, block, heater matrix and expansion tank till clean.
Final flush and refill with just water, check for leaks, then go with the anti freeze/corrosion inhibitor.
Long winded and a bit of a pita but the system will be clean.
Used radlfush in the past, not that good imho
Drain and refill with clean water. run to temp or for a day normal use in summer ok, then repeat.
A hose pipe can flush and reverse flush rad, block, heater matrix and expansion tank till clean.
Final flush and refill with just water, check for leaks, then go with the anti freeze/corrosion inhibitor.
Long winded and a bit of a pita but the system will be clean.
Used radlfush in the past, not that good imho