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Old 09-09-2019, 08:19 AM   #1
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Radiator Flush Cleaner

Good day fellow IRV2'ers,
I am planning to flush the radiator on my 2008 Newmar Kountry Star with the ISL400 HP diesel engine. I have seen several post on how to perform it, but do not see any mention on the radiator flush cleaner/chemical used - i.e. like Prestone Flush and Cleaner. Any recommendations for this to be used on a diesel side radiator?

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Old 09-09-2019, 12:15 PM   #2
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I don't trust additives,.....I'm "old school". If it's under-performing due to clogging from mineral deposits, I remove it and take it to a radiator shop for thorough cleaning.
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Old 09-09-2019, 03:58 PM   #3
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Fleetguard Cummins Restore Coolant System Cleaner Gallon - CC2610

Caterpillar - Cleaner-Cooling System 4C-4611

For every 10 gallons of coolant capacity a gallon of flush is used. Detailed instructions are on the jug.
Country Coach 2000 MAGNA C10
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Old 09-09-2019, 04:03 PM   #4
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I also used the Fleetguard system cleaner. Also need to flush the complete system and not just the radiator.
2002 Newmar Mountain Aire 4095
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