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**THI** · 03-25-2024, 03:43 PM

You drain the system, use water only and run according to the instructions, after that go back to the anti-freeze solution.

03-25-2024, 03:43 PM	#11
THI Active Member Join Date: Jan 2017 Location: Traverse City, MI Posts: 191	Re: Hairline Crack in LM7 5.3 Block You drain the system, use water only and run according to the instructions, after that go back to the anti-freeze solution.