Ford Focus Forum, Ford Focus ST Forum - View Single Post - 2008 Focus - Is there any way to flush the cooling system WITHOUT removing the T-stat?
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Old 03-29-2013, 02:25 PM   #2
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A long time ago when I drove a VW, early on I drilled a " (.25") hole in the top of the T-stat to allow the fluid in the upper part of the engine to drain down when flushing. Worked like a charm, and never looked back. Haven't tried it on my Focus yet, I've got a while to go before I do, but I'm going to try it. GL
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