GM Dex-Cool, 116K miles, 04 Chevy 2500HD

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Aug 29, 2011
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Decided to send in a sample on both my 2004's (Dmax & Tahoe). For grins I also checked these using the little prestone hand tool with the floating balls. This truck only floated 3 of the 5, but according to the report is in much better shape.

Note the capacity is 24 quarts, not gallons as listed by OAI.

Duramax%2520Coolant%2520Analysis%25203.21.12.JPG
 
Hahaha, yeah, that's quite an upgraded cooling capacity! Must have a tank in the bed!

Dexcool is a true long life coolant. Use it and use it properly and it will preserve your truck very well.
 
Looks good, overall.


I've added a coolant bypass filter to my Dmax. I'm hoping that will keep the debris out of the oil cooler. Should also help keep the coolant pristine for the 5 year CCI.
 
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