CL-Class (W216) 2007-Present: CL 500, CL 600

I added 6-8 oz of Zerex G40 (pink) to blue coolant. Is this ok?

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Old Dec 17, 2023 | 08:40 PM
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2007 CL 550
I added 6-8 oz of Zerex G40 (pink) to blue coolant. Is this ok?

So without thinking I topped off the coolant overflow tank with Zerex G40 (pink). The color of the coolant in there was blue. It's a 2007 CL550. The amount was about 6 ounces. Is this a problem?
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Old Dec 17, 2023 | 09:42 PM
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https://mbworld.org/forums/e-class-w...ml#post8342172
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Old Dec 17, 2023 | 10:44 PM
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2007 CL 550
So it looks like they are not to be mixed.
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Old Dec 18, 2023 | 07:51 AM
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Probably, but keep in mind these cars break if you look at them wrong. If you haven't flushed it lately, do so. Cheap insurance to prevent something going wrong...I just saw the blue stuff on sale at Walmart for only $17. So for $34 you can ensure there won't be a problem.
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