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Old 02-05-2019, 08:05 AM
Dash Riprock Dash Riprock is offline
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Is it helpful to cover grill on cold days -30C or -22F?

I imagine not many of you have experience with weather like this, however tempuratures have dipped a bit where I live, wondering if anyone covers their front grill for those days when it gets excessivley cold? I am heading out on a 3 hour drive in -25 to -33C weather, I have fitted a couple of pieces of cardboard that blocks 95% of the front grill. Is technology that good that blocking front grill is unnecessary?
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Old 02-05-2019, 08:19 AM
edycol edycol is offline
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Quote:
Originally Posted by Dash Riprock View Post
I imagine not many of you have experience with weather like this, however tempuratures have dipped a bit where I live, wondering if anyone covers their front grill for those days when it gets excessivley cold? I am heading out on a 3 hour drive in -25 to -33C weather, I have fitted a couple of pieces of cardboard that blocks 95% of the front grill. Is technology that good that blocking front grill is unnecessary?
If your thermostat is OK, no it does not help, actually it might prevent proper cooling.
All car companies test their vehicles in much colder temperatures and if everything is OK, it will not be a problem.
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Old 02-05-2019, 08:55 AM
Gary214 Gary214 is online now
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Quote:
Originally Posted by Dash Riprock View Post
I imagine not many of you have experience with weather like this, however tempuratures have dipped a bit where I live, wondering if anyone covers their front grill for those days when it gets excessivley cold? I am heading out on a 3 hour drive in -25 to -33C weather, I have fitted a couple of pieces of cardboard that blocks 95% of the front grill. Is technology that good that blocking front grill is unnecessary?
What is the benefit of blocking ? Never heard of such a thing
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Old 02-05-2019, 09:05 AM
Dash Riprock Dash Riprock is offline
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I am far from a mechanic, but the benefit would be to reduce the amount of cold air entering the engine, allowing engine to heat up sooner and maintain a proper engine temperature. I can say we always did with with my dad's 1988 6.2L diesel, with my 1997 Toyota Celica my 2006 Honda Odyssey. I haven't had enough experience with the BMW X5 35D to know how it responds in frigid temperatures, no temp gauge so I haven't always paid attention to temp (i.e. access hidden menu to watch temps). If you haven't experienced -30C before you would have no idea how cold it is.
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Old 02-05-2019, 09:11 AM
Gary214 Gary214 is online now
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We have experienced -4 F or -20 C in Central PA a few days back

Engine needs fresh air and if you block it, the combustion will suffer and it will misfire

Last edited by Gary214; 02-05-2019 at 09:14 AM.
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Old 02-05-2019, 09:17 AM
blue dragon blue dragon is offline
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It gets just as cold in Ontario. X5 has seen -35C regularly with no issues. Make sure you have a good battery and thermostat (not stuck open), and you are good to go.
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Old 02-05-2019, 12:08 PM
edycol edycol is offline
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Quote:
Originally Posted by Dash Riprock View Post
I am far from a mechanic, but the benefit would be to reduce the amount of cold air entering the engine, allowing engine to heat up sooner and maintain a proper engine temperature. I can say we always did with with my dad's 1988 6.2L diesel, with my 1997 Toyota Celica my 2006 Honda Odyssey. I haven't had enough experience with the BMW X5 35D to know how it responds in frigid temperatures, no temp gauge so I haven't always paid attention to temp (i.e. access hidden menu to watch temps). If you haven't experienced -30C before you would have no idea how cold it is.
Drove X5 35d on -37 here in CO and WY, no issues maintaining temperature, starting it etc.
I actually skied once on -42, started my car (Opel Vectra) with 15W40 oil etc. No issue in maintaining temperature. So, I am aware of extremely cold temperatures. European cars are really good in cold weather (I have now Toyota and that thing needed 15 minutes to start heating inside. Had to put block heater to mitigate that).
M57 engine reaches operating coolant temperature fairly fast for average internal combustion engine, and really fast for diesel. However, be aware that thermostat is an issue on these engines, so check coolant temperature in hidden menu or even better, if you have Carly.
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Old 02-05-2019, 02:09 PM
cluesblues cluesblues is offline
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I'm in Calgary too, X5d runs just fine without blocking the grille. Just make sure your t-stat is in good working order.
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Old 02-05-2019, 03:07 PM
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Doug Huffman Doug Huffman is offline
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I have a piece of heavy matting that I cut to fit tightly in front of the radiator. I used it for my first two winters with the X5d but not since.
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Old 02-05-2019, 09:54 PM
FredoinSF FredoinSF is offline
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Dad had a first gen 85 dodge caravan with the Mitsubishi 2.6L motor where fuel would freeze before it hit the carb on cold days. Park on the side of the freeway for a few and it would restart. Before we could figure the pattern I would have to go rescue him with my 83 Fuego, and if I had been a good boy Mom’s 85 Park Ave. Cardboard didn’t really help, but we tried it.
All those cars were new back then. Haven’t had a car hate cold weather like that minivan since. That was in Michigan. The X5d doesn’t balk at Sierra snow cold. Sierra snow cold is nothing like the Midwest cold over the past week, but the X5 just goes.

Two days ago at Donner Lake:
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