Coolant analysis results

[Fred Cook]

Recently received my coolant analysis report from Fabick CAT.  About the only thing I understand here is that the coolant is good and the Freeze Point is minus 41F.  All the other readings are pretty much greek to me. Hoping I am not bumping any limits.

[Mike Shumack]

It looks like you switched to the ELC (Extended Life Coolant) so you don't need to worry about SCA levels anymore. I am planning to make switch as soon as I return from my trip this weekend.

In your analysis, it says your coolant PH is 7.3.  And it says everything is okay - no action needed.

But in the CAT publication "Know Your Coolant" SEBD0518-09 (page 36) it says the desired coolant PH level should be between 8.5 and 10.5. I don't know if there is anything you can add (or would want to add) to bring the PH up a few points. In swimming pools you add sodium carbonate Na2CO3 (soda ash) to raise PH.

Maybe Dave can comment on this.

[Fred Cook]

It looks like you switched to the ELC (Extended Life Coolant) so you don't need to worry about SCA levels anymore. I am planning to make switch as soon as I return from my trip this weekend.

In your analysis, it says your coolant PH is 7.3.  And it says everything is okay - no action needed.

But in the CAT publication "Know Your Coolant" SEBD0518-09 (page 36) it says the desired coolant PH level should be between 8.5 and 10.5. I don't know if there is anything you can add (or would want to add) to bring the PH up a few points. In swimming pools you add sodium carbonate Na2CO3 (soda ash) to raise PH.

Maybe Dave can comment on this.

Hmm.... interesting...  there is a blank space between 7 and 8.5 on the chart with no explanation.  For now I suppose I will follow the advice on the report and check it next service about this time next year. Thanks!

[Mike Shumack]

Maybe that blank space is the "acceptable" range and the zone above it is the "desired" range.