Re: Packard engine coolant

Posted by Marty or Marston On 2015/2/7 19:19:40

After reading what has been done to the block & radiator they seem an unlikely source for the "mud". Could the head have been the source of the rusty debris that has probably worked it's way throughout the entire cooling system?

At this point, I think I would remove the radiator and back flush it. Then do a flow test. There was a recent posting on this subject within the last two months or so. I would then try to hook up a water hose to the engine and back flush it with water before installing the radiator.

I'm not sure if an oxalic acid treatment (followed with a sodium bicarbonate neutralization step) would be in order or not, which should take care of a minor rust problem.