flush out the entire system to clean out all the old inhibitor.
Some inhibitors can react with one another. This can corrode and
destroy the radiator.
Aluminium radiators require a Glycol based inhibitor that meets the
Australian Standard AS2108. Aussie Desert Cooler recommends GMH
inhibitor to suit VN Commodore.
After the radiator has been fitted and the system has been refilled
using the correct inhibitor, the inhibitor must be checked for STRAY
CURRENT using a voltmeter/electrolysis detector. Always check for
stray current with the engine running and with all accessories turned
ON. If any accessories are not earthed properly the stray current
passes through the inhibitor and can corrode the radiator within