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02-09-2017, 03:23 PM | #23 |
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modern BMW's with the electric water pump run hot for emission and fuel economy purposes.
120c are tracks temps and too high of a temp to be seeing on the street. for those of you with oil temperatures reaching past 110c a good quality 5w40 like motul, shell rotella t6, and liqui moly is recommended as well as removing your plastic engine cover in warmer weather to maintain temps. |
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02-14-2017, 08:08 AM | #24 | |
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02-15-2017, 08:57 AM | #25 | ||
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02-28-2017, 01:04 PM | #26 |
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Funny enough my 2013 just had coolant pump failure last week, been keeping an eye on oil temps. They seemed high compared to before but I think I'm being paranoid now. Seems like it's in 230-240 range.
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03-01-2017, 08:19 AM | #28 |
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Not sure why people are still so confused on this topic... People also seem to be quoting the oil temp gauge as their coolant temps LOL. The in-dash gauge is for oil. Coolant can only be read through idrive, if you have it. The oil thermostat operates in the range of 220-250f. Anything more than 250f on the oil means you might benefit from a bigger oil cooler or some other cooling upgrade. I'd say ideal would be to keep it at 250f but no more than 280f...
Here it is straight from BMW academy (N55): Engine cooling The engine cooling system utilizes an electric coolant pump. The heat management determines the current cooling requirement and controls the cooling system accordingly. Under certain circumstances, the coolant pump can be completely switched off, e.g. to rapidly heat up the coolant during the warm-up phase. The coolant pump continues to operate when the hot engine is shut down. The coolant capacity can therefore be varied regardless of the engine speed. In addition to the characteristic map thermostat, the heat management makes it possible to use various characteristic maps for controlling the coolant pump. In this way the engine control unit can adapt the engine temperature to the driving conditions. The engine control unit regulates the following temperature ranges: • 108°C/226°F = Economy mode • 104°C/219°F = Normal mode • 95°C/203°F = High mode • 90°C/194°F = High mode and control with characteristic map thermostat The engine management sets a higher temperature (108°C) when, based on vehicle operation, the engine control unit detects ”Economy” mode. The engine is operated with relatively low fuel requirements in this temperature range. The internal engine friction is reduced at higher temperatures. The increase in temperature therefore results in low fuel consumption in the low load range. The driver wishes to utilize the optimum power developed by the engine in “High and control with characteristic map thermostat” mode. For this purpose, the temperature in the cylinder head is reduced to 90°C. This temperature reduction promotes improved volumetric efficiency, thus resulting in an increased engine torque. Adapted to the relevant driving situation, the engine control unit can now regulate a defined operating range. In this way it is possible to influence the fuel consumption and power output through the cooling system. 92 N55 Engine System Protection If the coolant or the engine oil overheat during operation, certain vehicle functions are influenced to the effect that more energy is available to the engine cooling system. These measures are divided over two operating modes: • Component protection - Coolant temperature between 117°C/242°F and 124°C/255°F - Engine oil temperature between 150°C/300°F and 157°C/314°F - Result: The output of the air conditioning system (up to 100%) and of the engine is reduced • Emergency - Coolant temperature between 125°C/257°F and 129°C/264°F - Engine oil temperature between 158°C/316°F and 163°C/325°F - Result: The power output of the engine is reduced (up to 90%) Texoma1836 blue135 tyhackman15 sl8anic |
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03-01-2017, 09:31 AM | #29 | |
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Maybe the numbers have been adjusted with software revisions? Not sure, but either way the point that it targets different values is all that really matters. |
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03-01-2017, 01:22 PM | #30 | |
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03-02-2017, 12:22 AM | #31 |
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Could you turn off/reset thrown CEL codes (due to downpipe(s)) with this magical Bluetooth device that I'm just now hearing about lol!?
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03-02-2017, 03:07 PM | #32 |
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bNks334 - perhaps you are right about some thinking the Oil temp gauge has some ability to read coolant, as well. Others of us use aftermarket schemes to get the readings. I run Scan Gauge II in my vehicles and can read coolant temp and a myriad of other things from the OBD II port. So my numbers are more digital and exact than the dash gauges (whether that be oil or coolant).
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03-28-2017, 09:26 PM | #34 |
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Oil temp from about 220-230...
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2008 135i-Vargas GC Lite turbos, turbo inlets, Vargas turbo outlet, Phoenix chargepipe, Turbosmart plumb back valves, VRSF 5" intercooler, VRSF 3" downpipes, PE exhaust mod, gutted midpipes, AFE intake, BMS OCC, RB PCV valve, JB4, MHD backend, StopTech slotted rotors, Cool Carbon pads.
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