Re: {Chrysler 300} coolant level down

Perhaps I thought insufficiently about James problem. I assumed his rad level had been constant until recently which would cause me to think he is loosing coolant from a leak.

I would still pressure test the system to be sure. Costs nothing and will deliver peace of mind.

As mentioned by others all cars without expansion tanks must be allowed to find their own comfortable level. In my experience after any work done involving draining and refilling a cooling system it may take half a dozen or more long runs before the car is happy with its fill, all of it dependent on ambient temps.

This cycle is prolonged by overfilling each time she spits. A level just over the tubes would bother me, but its likely not the original rad the car came with, could have something to do with it.

-----Original Message-----
From: "Hank Hallowell" <Hank@xxxxxxxxxxxxxxxxxxx>
Sent: Monday, May 12, 2025 10:06am
To: "HAAG ROBERT" <scooter465@xxxxxxx>
Cc: "Taylor Nick" <nicksgaragesd@xxxxxxxxx>, "Douglas James" <jdd@xxxxxxxxxx>, "Chrysler Club International" <chrysler-300-club-international@xxxxxxxxxxxxxxxx>
Subject: Re: {Chrysler 300} coolant level down

I want to chime in and completely concur with the self leveling comment made by Bob.

I have a bunch of these. Every winter I go thru check all of the fluid levels/change fluids/air pressure etc… every spring they all spit out what they don’t need - so I learned years ago- don’t sweat it as long as tubes are covered & the temp gauge is reading Ok. And even then every once in a while I drag out my old school meat thermometer and double check the temperature gauge if I’m suspicious.

Hank

On May 12, 2025, at 8:02 AM, ROBERT HAAG <scooter465@xxxxxxx> wrote:

Self leveling
Needs room to expand when hot.

That's why they added the

Coolant recovery system

In 1973 on all models.

Bob Haag

On May 11, 2025, at 11:28 PM, Nick Taylor <nicksgaragesd@xxxxxxxxx> wrote:

My 300F acts the same way. It wants to be about a quarter inch over the tubes when cold. Any more than that it will push out the extra when I stop. Done it at cruise nights and car shows more than once. The car never runs hot.

On Sun, May 11, 2025, 2:05 PM 'James Douglas' via Chrysler 300 Club International <chrysler-300-club-international@xxxxxxxxxxxxxxxx> wrote:

On my 64, the radiator coolant level seems to drop to hear the bottom of the upper tank. No leak in the radiator or anyplace else I can find. I noted that it seems to push water out the overflow after a long hour freeway run. I am used to this in my cars without overflow containers, but never this much.

Is it possible that the pressure cap is not doing its job. Anyone having issues with the pressure caps?

James

--
For archives go to http://www.forwardlook.net/300-archive/search.htm#querylang
---
You received this message because you are subscribed to the Google Groups "Chrysler 300 Club International" group.
To unsubscribe from this group and stop receiving emails from it, send an email to chrysler-300-club-international+unsubscribe@xxxxxxxxxxxxxxxx.
To view this discussion visit https://groups.google.com/d/msgid/chrysler-300-club-international/CY5PR19MB617197764AF4E0C53BA8DC5A9394A%40CY5PR19MB6171.namprd19.prod.outlook.com.

--
For archives go to http://www.forwardlook.net/300-archive/search.htm#querylang
---
You received this message because you are subscribed to the Google Groups "Chrysler 300 Club International" group.
To unsubscribe from this group and stop receiving emails from it, send an email to chrysler-300-club-international+unsubscribe@xxxxxxxxxxxxxxxx.
To view this discussion visit https://groups.google.com/d/msgid/chrysler-300-club-international/CA%2BjApFOa9gpTzZmeFgqQCtLgGzQG112fLoiJ%2BjA5G7YDhyCDNQ%40mail.gmail.com.

--
For archives go to http://www.forwardlook.net/300-archive/search.htm#querylang
---
You received this message because you are subscribed to the Google Groups "Chrysler 300 Club International" group.
To unsubscribe from this group and stop receiving emails from it, send an email to chrysler-300-club-international+unsubscribe@xxxxxxxxxxxxxxxx.
To view this discussion visit https://groups.google.com/d/msgid/chrysler-300-club-international/CE30E74D-D0B7-494F-B74F-96B0381B22A5%40cox.net.