Coolant conversion question

[deandec]

I am still using the Ethyl Glycol coolant that my 24 year old chassis manual specifies.

I have had my coolant tested by an independent lab. It passed with flying colors, but.......

....They recommended I replace the coolant because it only tested to -20 F below zero not -32 F below zero. Strangely, I have so far ignored that advice.

SCA testing is not difficult, even I can do it. I waste lots of time anyway so the 5 minutes of time to test the coolant several times per year really is not wasted.

YMMV

[suzygirl2017]

Where can I send my Coolant for testing?

Thanks in Advance,

Dennis

[efstewart]

After reading this thread about coolant, I am a little concerned.

A few weeks ago I was driving through very hot weather at high altitudes when I noticed that the engine temp climbed just a little over 195 degrees for the first time ( I am the 2nd owner of this 2006 Intrigue with a 400 Cummins ISL, but I have very little history on the chassis maintenance of the Coach).

After calling several trucking and Rv shops in St. George Utah, I could not find anything close to the green OEM coolant, so I stopped by a Walmart after I saw that the coolant level in the tank was reading low, and I put in 1 1/2 gallons of Final charge Global 50/50 prediluted in the tank.

It now runs nice and cool and maintains a steady 195 when warmed up. I did not realize that "Final charge" (red coolant) was an OAT product until I read the back label today.

Also, on the back label was this message "Can be mixed with other coolants (to maintain corrosion protection, contamination levels should be kept below 25 %)+

Do I need to drain and flush right away? or can I wait a little?

[CountryFit]

No need to flush it immediately, but you heard about green coolant, SCA, OAT, etc. What about them, why they are significant? It all boils down to engine design in that era and, the concept of cylinder wall pitting. Dr D used to have a photo to show you how it looks like. Google and read, you'll make up your own mind soon.

[stonegully]

Good info on the Peak website. Learned something new today.
thanks.

https://www.peakhd.com/product_lines/final_charge/faq/

From the site Q and A section:

Q: My truck is using a conventional coolant, and I would like to change to FINAL CHARGE GLOBAL Coolant/Antifreeze. How do I convert my truck?
A: With the FINAL CHARGE GLOBAL Extended Life Coolant Fleet Conversion Program, you can convert a truck using conventional or fully formulated coolants to FINAL CHARGE GLOBAL Coolant/Antifreeze without having to drain, flush and refill the cooling system. At the center of this program is FINAL CHARGE GLOBAL Converter. FINAL CHARGE GLOBAL Converter is formulated with a special blend of FINAL CHARGE GLOBAL Coolant/Antifreeze’s patented Organic Acid Technology (OAT) inhibitors with Contamination Tolerant Additives. A one-time dose of FINAL CHARGE GLOBAL Converter is specifically formulated to convert properly maintained cooling systems using conventional or fully formulated coolants meeting ASTM D-4985, ASTM D-6210 or TMC RP-329 to FINAL CHARGE GLOBAL Coolant/Antifreeze’s patented formula.

[Smitty77]

Originally Posted by CountryFit

No need to flush it immediately, but you heard about green coolant, SCA, OAT, etc. What about them, why they are significant? It all boils down to engine design in that era and, the concept of cylinder wall pitting. Dr D used to have a photo to show you how it looks like. Google and read, you'll make up your own mind soon.

I agree that as long as your current coolant was in good shape, no need to worry about adding Final Charge into the mix - as it says, it is compatible. Look at Stonegully's post about the Converter. I'd pull a sample of your coolant for lab analysis, and if it comes back with a good report - go the Peak Final Charge Converter route...

And thanks to Stonegully, for digging into the Peak site and sharing this info on the converter!!

That's what is so great about this site, and how as Stonegully says - we can all learn something new.... (Even some of us old dawgs!!)

Best to all,
Smitty