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      04-21-2026, 08:53 PM   #1
BimmerRob08
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Drives: 2008 M3, Space Gray
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do88 radiator & draining. Two-part question

Got a few questions about do88 radiators. Doing some reviews and videos, looks like do88 radiators had some past QC issues with fitment and leaking about a year ago from the posts. I jumped the gun and got a radiator and oil cooler on order. What's the latest and any issues anyone have encountered since install?

Second question is, the do88 does not have a drain. There is one post about someone modding and adding a drain, not planning to do that. So once installed, if needed down the road to remove or drain, how do you drain a system that has no bleed screw? I've looked up all sorts of video's that show how to pull a vacuum, which I have the valve tool from Schwaben, to do that, and plenty of videos on how to fill the system, but how does on evacuate (drain) the coolant with a do88 radiator that has no drain?

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