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#1
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Excessive condensation on engine
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2006 BMW x5 e53, M54, steel grey, black leather, pano roof, cold weather package, avic-z150bh head unit with JL Audio amp and speakers. |
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#2
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When my wife drives her X5 in winter to take son to school 3 blocks away she continues driving untill the temp is normal before coming home.
There is a cold weather ccv kit which would not likely be on the original engine but if they just put in the same engine would also not have it. I've considered adding a motorcycle hand grip heater to the hoses to keep them warm in winter vs just insulation that the cold weather kit has.
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2011 E70 • N55 (me) 2012 E70 • N63 (wife) |
#3
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To be clear It's not the water temp that needs to be at operating temp for 25-30 minutes to remove condensation it is the oil temp.
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X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interior Dallas |
#4
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Correct engine oil > 212F to boil off any water. I'm wondering if pulling the dipstick to reduce pressure could help (though idle will suffer)
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2011 E70 • N55 (me) 2012 E70 • N63 (wife) |
#5
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I am not an expert on oil viscosity. So maybe I shouldn't opine.
But what about running 5W-50 oil in the winter months which as I understand it will run at higher operating temps than 5w-30 - in turn burning off condensation sooner? |
#6
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All weights of oil will run at the same temp. Water temp manages oil temp.
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X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interior Dallas |
#7
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If the crankcase is closed, and gases within saturated, there is no way to expell moisture at any temp.
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1988 325is (purchased new) sold 2004 X5 3.0 2005 X3 2.5 2008 X5 3.0 (new to me) |
#8
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Through the CCV system but my suggestion to speed things along is vent though the dipstick tube or fill port where the water apparently gravitates and becomes mayo.
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2011 E70 • N55 (me) 2012 E70 • N63 (wife) |
#9
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The water doesn't really gravitate anywhere, but letting some dry air in for sure will help. Leaving the dipstick loose may let air in but can't let air out because the bottom of the dipstick tube is well below even the oil add level because it acts as a vacuum break for the CCCV, so if there is any pressure build up in the crankcase it will be oil spewing out the dipstick tube, not moisture or crankcase fumes.
If you can get a little bit of fresh unsaturated air into the crankcase so that the CCCV or PCV can do it's job and suck the moisture out and cover the engine, especially the vacuum distribution manifold, with a (mostly)wool (mostly fire retardent) blanket, the problem will be solved.
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1988 325is (purchased new) sold 2004 X5 3.0 2005 X3 2.5 2008 X5 3.0 (new to me) Last edited by 80stech; 12-24-2019 at 10:02 PM. |
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