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Discussion Starter · #1 ·
Did a flush & fill in my '98 5.7L Suburban. Added straight dex-cool to the radiator, and about the right amount of water to the overflow, figuring they would mix together. Drove around with the heater blasting on high long enough to get it up to normal temp, plus another 10-15 minutes. The overflow is still just water.

How long will I have to drive it until it mixes it so I can use my coolant checker & see if I need to change the mix? (should be near 50-50 as is, but I want to be sure of course)
 

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Discussion Starter · #3 ·
Oh well, I guess it's an excuse to go play. :great: As long as everything's good by winter, it's all good...
 
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