03-29-2018, 05:44 PM | #1 |
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X5M engine temps?
Hi all,
I am starting to wonder if the PO of my 2010 X5M installed a low temp thermostat. My temp always sits a fair bit below 1/2 way on the gauge, and every other picture/ video I have seen they look to be right at 1/2. Anyone that knows what thermostat they have and can verify where their gauge sits? Sounds like this could have been a measure to preserve valve seals, as I generally prefer to leave stock temp units in modern vehicles, and let the ecu do what it expects to do. |
03-29-2018, 07:40 PM | #3 |
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03-30-2018, 08:02 AM | #4 |
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The X5m has a 105c thermostat, but it’s map controlled. So the ecu can open it sooner and my understanding is the x5m targets 95c. So it’s operating temp is lower than a standard bmw v8 103c-108c. this should help with valve stem seal longevity as heat cases the elsarisizers to evaporate more quickly out of seals chasing them to loose pliability and sealing. It’s a popular mod on the n62 to add a low temp thermostat to increase valve stem life. The normal n62/n63 has a 105c thermostat to improve fuel efficiency. I did it to my n62 add a 95c thermostat. Lots of threads on this mod.
There is no engine coolant temp gauge on my x5m that gauge is oil temp. |
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03-31-2018, 04:33 PM | #5 | |
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S63 work temp is 105C. It need 85C thermostat to lower work temp to normal 90C. |
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04-01-2018, 11:18 AM | #6 |
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Where can we source the thermostat?
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07-08-2018, 06:32 AM | #8 |
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08-02-2018, 04:46 PM | #9 | |
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Hot temp in Tucson AZ
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08-03-2018, 08:39 AM | #10 |
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The PO could've installed a lower thermostat or a modified valve for the oil cooler. The modified valve doesn't reduce the flow of oil to the oil cooler.
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08-18-2018, 07:42 AM | #11 |
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I'm going to research the oil temp valve.
I use my X5M to tow a travel trailer. I noticed that frequently in Colorado my oil temps rose a lot, I belive to about 3/4's what is that about 270F. I think these cars would benifit from lower operating temps. After replacing every oil seal on this engine.... Anyway the normal coolant temp is about 95C not sure if a lower temp thermostat will make a difference.. Yes they have 105C thermostats, but all of them are ECU controlled and the X5M works to keep the car at 95C. |
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08-18-2018, 07:45 AM | #12 | |
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Quote:
http://www.bmwlogicseven.com/?p=4035 |
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08-18-2018, 11:26 AM | #13 | ||
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