Re: Good deal on extended life coolant through Amazon
Reply #1 –
I would suggest that the 300,000 miles, NOT 3 years is used to determine when to add the extender. In other words, in most RV applications, you add NOTHING. Went through this with the Caterpillar engineers and Caterpillar ELC. What we found was that in RV applications, adding the extender "over-dosed" the coolant.
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