Re: Packard engine coolant

Posted by 28Pack526 On 2015/2/5 10:02:23

Hi Phil,

My '28 526 has nearly the same motor (making the assumption that yours is a single six from the photo), and it runs consistently between 160-180 on even the hottest days and under extended load (lots of hills where I live too). I'm running 50/50 off the shelf glycol.

If you haven't already, I'd check the radiator, waterpump, and thermostat before switching to exotic coolant mixtures. Is your radiator an original honeycomb? If so, I'd definitely have it flow tested.

Great looking car btw!