Novak Conversions Jeep Wrangler TJ engine mounts

New radiator - different coolant

02-TJ

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Dec 8, 2023
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So my radiator started leaking from where the top/inlet area mounts to the core. Based on a quick search on this site, I figured this Zerex G05 coolant is what I should be using.



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I drained my old coolant, replaced the radiator and proceeded to flush the system. I know that you are not supposed to mix different types of coolant. The coolant in the system previously was red (the G05 is yellow), I ran out of time and was only able to do 4 (maybe 5, can't remember) flushes. I was wondering if you all considered this diluted enough, the deep red one is the initial drain, the middle one is the second to last drain/flush and the one on the left is the last flush. I know a good bit of that is remaining in the engine/rest of cooling system. I was running out of daylight and didn't really have enough distilled water to do another flush. Is that enough dilution, or do I need to drain my cooling system and try again?

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When I flushed mine, I drained from the engine block and didn’t need as many flushes to get it clear.
But I’d agree with @JMT you should be good to go.
 
Run it for awhile and check the coolant recovery bottle to look for precipitation. If it stays clean, you should be okay.
 
Novak Conversions Jeep Wrangler TJ engine mounts