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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 12-18-2008, 12:23 PM   #1
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Join Date: Nov 2008
Location: Viroqua, WI
Posts: 3
My Ride: 325xi 5-spd
Partially drain coolant with Fluid Extractor?

Hey all,
I need to replace the sticking thermostat in my '05 325xi, but my coolant was recently replaced and I don't have a functioning garage at the moment. Would it be possible to drain enough coolant with the fluid extractor to get the fluid level below the thermostat housing?
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Old 12-18-2008, 10:49 PM   #2
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Join Date: Mar 2007
Location: Maplewood, New Jersey
Posts: 1,176
My Ride: 2010 328xi
I had to change my thermostat out and didn't really want to do the whole system. I wouldn't guess with an extractor, it's much easier if you simply drain the expansion tank and radiator (which is about 1-gallon or half the system) you'll have a dry thermostat when you pull it. If your coolant is still clean you can reuse it, but I'd suggest just refilling with new stuff. But overall it's far less messy and time consuming than draining the block.
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Old 12-19-2008, 04:22 PM   #3
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Location: Viroqua, WI
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My Ride: 325xi 5-spd
Thanks for the reply grafiksguy, I'll just do it right and drain the radiator like you said.
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