Re: Packard engine coolant

Posted by DavidM On 2015/2/5 20:16:11

Phil,
I agree with the the previous comments, the type of coolant is not going to fix serious overheating, I would be getting the radiator flow tested and if it is the original radiator core then the chances of it having all flow passages clear are not good neither are your chances of cleaning it.
Engine tune certainly needs to be checked but if you have an old radiator core its the number one suspect in my book.
I suggest you talk to our PACA Technical Advisor Peter Toet about his radical method of cleaning out an old radiator.
Also keep in mind The Vintage Honeycomb Radiator company in Brisbane run by our Qld PACA member Greg who also has a 1920's 6 cyl Packard like yours.
If you can live with a non authentic core a new ribbon type core will give you the best cooling and some margin on the original core.
Good luck David