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Old 09-22-2012, 01:20 PM   #1
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SCA Question

I realize that DCA2 is a nitrite, borate & silicate SCA and that excessive levels of nitrite/borate SCA can become aggressive to lead solder and aluminum. And that DCA4 is composed of nitrite, molybdate, phosphate and silicate. I have several pints of DCA4 but my cooling system is charged with the SCA DCA2, so my question is can DCA4 be added to my system without fear of cross contamination issues to bring the SCA units up to Cummins specs?
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Old 10-19-2012, 12:34 PM   #2
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Zoom.....right over my head
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Old 10-19-2012, 01:00 PM   #3
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In the literature from Cummins on the web site for the supplemental coolant additives (SCA) it says if you have a technical question to call them.

Supplemental Coolant Additives (SCAs)
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Old 10-19-2012, 01:09 PM   #4
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BigSkyBob......Are you sure your coach doesn't have OAT coolant. I thought by 08 that Monaco was using OAT coolant. If you don't have the OAT coolant, it would be WELL worth it to change over. It runs cooler and DOES NOT require any additives. No more worrying about levels and testing. I changed my to Final Charge and have been very happy with it.

If you do it yourself, you're talking about a $100.00 or so job.
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