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#1
12-07-2012, 01:14 PM
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4.8is burped coolant: is this common? Coolant light now on
W/o having it in front of me, the landlord noticed a 2' diameter pool of coolant under my X5 when I left yesterday, and my coolant light came on yesterday as well.
I've had a Porsche or two that's burped coolant for no known reason, without faults to the cooling system: just wondered if the X5's did it too. Is there a special coolant mix that everyone will point guns at me for NOT using?? Mark
__________________
'06 4.8is Imola Red '91 911 Turbo '86 928S Turbo '82 928 Turbo Race car '80 Porsche/Glastron Carlson CVX 20 Intimidator, '74 911 RSR Tube-frame clone Race car 
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#2
12-07-2012, 05:27 PM
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I do not think this is common on BMW to "burp" coolant
Get the blue dealer coolant. It cost a bit more, but once you dilute with distilled water, the price is usually better than the off the shelf autostore stuff. Plus it is meant to keep the system clean and running properly.
__________________
2006 4.8is, Black on White. SOLD Sniff Sniff. 2017 F85 x5m, Black on Red. BEAST MODE "The older we grow the greater becomes our wonder at how much ignorance one can contain without bursting one's clothes." - Mark Twain Unlock OBC post 5
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#3
12-07-2012, 06:10 PM
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Are you sure you don't have a leak? Cooling systems notoriously weak on most BMWs...
__________________
2002 X5 4.6is - Titanium Silver / Black Alcantara - Dinan Stage 2 - Bilstein/Eibach - Brembo BBK ----SOLD--- 1993 318i - Brilliantrot / Tan - bone stock daily driver
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#4
12-07-2012, 09:55 PM
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Check your coolant expansion tank located on the driver side closer to the front. They are notorious for cracking and leaking (check the bottom of it). Also, check the all hose connections. Report back?
__________________
Current: 2017 640Xi Convertible 2011 Acura MDX 2018 Santa Fe Past: 2013 Honda Accord 2008 Acura TL Tech.------2004 BMW X5 4.8is----2004 Acura MDX Tech 1994 BMW 525i.----------1994 Lexus 300 GS.----1994 Acura Legend GS 1991 Acura Legend LS.----1991 Honda Accord.----1991 300ZX twin turbo 1996 Buick Regal GS.-----1984 300Z 50th anniv.--2002 BMW X5 1982 280Z
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#5
12-08-2012, 03:54 PM
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No more leaks since then, but can see where it sprayed all over the engine compartment. Thermostat stuck a little or vent in cap clogged??
__________________
'06 4.8is Imola Red '91 911 Turbo '86 928S Turbo '82 928 Turbo Race car '80 Porsche/Glastron Carlson CVX 20 Intimidator, '74 911 RSR Tube-frame clone Race car
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#6
12-09-2012, 02:18 AM
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haircrack somewhere in the plastic body - check the direction where the white residue is coming from, your crack is there... a hose may have cracked at the clamp area... get it fixed now, before your engine parts are scattered on the highway due to overheated block/blown gaskets...
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#7
12-09-2012, 07:15 AM
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Still no more leaks, residue..weird.
__________________
'06 4.8is Imola Red '91 911 Turbo '86 928S Turbo '82 928 Turbo Race car '80 Porsche/Glastron Carlson CVX 20 Intimidator, '74 911 RSR Tube-frame clone Race car
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#8
12-10-2012, 02:50 PM
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Ok, leaks again: my little LED light on a flexible stick & a dental mirror show a continuous wet spot on the underside of the tank, so a new one went on this am from my trusty independent shop across the street: $170: not too bad. BMW quoted $127 just for the reservoir.
Mark
__________________
'06 4.8is Imola Red '91 911 Turbo '86 928S Turbo '82 928 Turbo Race car '80 Porsche/Glastron Carlson CVX 20 Intimidator, '74 911 RSR Tube-frame clone Race car
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#9
12-10-2012, 03:35 PM
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I paid under $100 for the reservoir with new cap and level sensor from BMW of Bloomfield. Install takes 15 min. I guess $170 isn't bad.
__________________
2006 4.8is, Black on White. SOLD Sniff Sniff. 2017 F85 x5m, Black on Red. BEAST MODE "The older we grow the greater becomes our wonder at how much ignorance one can contain without bursting one's clothes." - Mark Twain Unlock OBC post 5
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#10
12-10-2012, 03:36 PM
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Normally I would have done it myself but scheduled to drive out of town in it tomorrow...so yeah, it was necessary to address it today.
__________________
'06 4.8is Imola Red '91 911 Turbo '86 928S Turbo '82 928 Turbo Race car '80 Porsche/Glastron Carlson CVX 20 Intimidator, '74 911 RSR Tube-frame clone Race car
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