Real close to 5 Thomas Jeffersons later, the radiator has been recored. The car hasen't bee driven enough and the fluid wasen't changed frequently IMO and the guys at the raidator shop said flush +2 times to remove the rust (iron) from the block.
It becomes s pH issue if the fluid gets too old. I have a boat with a mercruiser 350 GM & heat exchanger/seawater system and the pH needs to be maintained at base neutral if posible (i.e. the engine has glycohol in the water jacket which is pumped through the heat exchanger to cool and lake water is pumped accross the HE to cool). No salt water here in WI but that is how the boat was set up and what I have learned about pH and coolant issues to preserve this engine.
There are a lot of incompatible metals in an engine (iron copper brass) which come in contact with the coolant and acidic coolant will accelerate the process. I am assuming this may have been the case with the 68. Waiting on the front support mounting hardware from Ames, should arrive tommorow.
Later,
Kevin-
Last edited by kevinb; 07/19/1210:53 PM.
Restoring and maintaining old cars and old boats....oh what fun we invent for ourselves. Seems to go in stride with ....You don't live it until you own it....Three steps forward....two steps back ....