Re: Right Mix for coolant

Posted by Dave Brownell On 2014/10/14 14:48:51

O-D's advice on making your own mix of green e. glycol and water is spot on good advice. I faced the same issue with my 374 V-8 when I got it. I spent very few bucks on a new temp sender unit at NAPA and suddenly, my dash temp gauge reads just fine.

This temp sender unit screws into the back side (facing the firewall) of the left cylinder head. It's easy to get to, once you know where it is, and may have been the cheapest thing I have done to my Packard and to my driving confidence with it. On a good day, especially if you're feeling lucky, check the connectivity of the wire connecting to the sender unit; if it's loose your gauge may not read correctly. Replacing the unit when the system is drained of the old coolant makes perfect sense for good timing.