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2010 2011 BMW 5 Series Forum F10 Is this normal ? Oil temp related |
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06-06-2018, 08:10 PM | #1 |
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I just have a question, in the mornings when I drive my 535i msport from home to work usually the outside temp is between 82 and 85 degrees Farenheit and the vehicle reaches oil temps of 240 degrees Farenheit, then when coming back from work at 6pm when outside temp is at 108 degrees Farenheit the temp oil reaches only 210-215 degrees Farenheit, is this normal?
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06-07-2018, 08:05 AM | #3 |
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I think you misunderstanding me, when the temp outside is higher the oil temp is lower.
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06-07-2018, 10:41 AM | #4 |
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In both my 2012 535i and my 2015 535i there was no oil temp variation in the 60F to 95F outside temperature. Now my cars have had no experience with 108F so I don't know about that.
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06-08-2018, 07:45 PM | #5 |
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the N55 has a electric coolant pump with a heat management function and a characteristic map thermostat where certain mapped cooling and heating are put into effect under certain situations.
Usual if you are driving very aggressive or it is hot out, the cooling system is put into effect and the temp you will see are lower then normal. On the other side, if you are driving slowly and economically, the temps will be in the usual normal range towards the middle of the gauge. What you see is 100% normal and its the heat management function being put into effect with those high ambient temps.
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06-14-2018, 04:36 AM | #6 |
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How long is your commute (morning vs evening)? Could be that temps don't rise to full operating temperature until driven for a while longer and oil is still slightly warm by evening so initial heatup progresses faster. Have you tried taking a longer trip?
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06-14-2018, 03:56 PM | #7 |
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Morning and evening commute is exactly the same 16 miles, the only variable here is the outside temp !
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06-15-2018, 03:36 PM | #8 | |
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Instead, the engine dynamically changes the operating temperature based upon driving dynamics. This improves fuel efficiencies while reducing emissions or shifts to performance being the priority at the expense of fuel. In all cases, emissions are controlled to the best of the cars ability. |
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06-16-2018, 05:31 PM | #9 |
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Im gonna take a guess and say it could be a sticky thermostat.
When the car initially starts (cold), the thermostat may take a bit longer to fully open. This will result in more pressure and a higher coolant temp. After fully warming up, the thermostat may gradually open or stay open a bit longer than it would over night. When you start again to come home, the thermostat may not have to work as hard to fully open. I would change the thermostat. |
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06-16-2018, 05:37 PM | #10 | |
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06-17-2018, 06:35 AM | #11 |
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I'm not sure why it hasn't been discussed or suggested that you need to be looking at the coolant temp as well if you're trying to figure out what's going on.
As someone already mentioned, there's all kinds of factors involved in setting the target temp for the cooling system - engine load, ambient temperature, outdoor temperature. Even way back in the E39 days they had the M62TU run at a target temperature of 108C for efficiency. But, based on a dozen different things, it would lower to other target temperatures, the most extreme was 89C I think. If it was really hot out, or you were driving very aggressively with high engine loads or sustained high speed (i.e. autobahn speeds) it would lower the target temperature. The series of engines in the F10 do all those same things, although I don't have a document on me which reviews them all (but I think I do have the N55 document somewhere). Perhaps the 108F drive home is hot enough that the coolant target temperature lowers, thus the oil temperature also lowers? Why don't you use the hidden cluster functions to bring up the coolant temps and see if they correlate. If they do, then you're done and the mystery is solved with measurement and facts. |
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06-17-2018, 11:30 AM | #12 | |
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I note on my N55 engine that most of the time, due to moderate ambient temperatures, my oil temperature is pretty stable. At higher ambient temperatures the oil temperature will initially climb a bit higher than normal, but soon drop back at higher road speed, or under load, to around 105 - 110C, (220 - 230F). |
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06-19-2018, 06:48 AM | #13 | |
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06-19-2018, 07:34 AM | #14 | |
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I'll give an example of a thermostat starting to open at slightly lower temperatures in an M57 diesel, (common weakness). Ambient temperature would make a difference to ECT. The colder the ambient temperature the higher the engine coolant temperature on steady speed driving. The mechanical thermostat is on the front of the engine, running in freezing air flows. Thermostat was being cooled from 'outside', slower to open and therefore held the coolant temperature (in the engine) slightly higher. In traffic ECT would drop back, exactly the opposite as you would expect for a failing thermostat, one which is failing to open position. |
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10-31-2018, 09:39 AM | #16 |
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I have a question when the oil temperature reaches close to the 250F temp. I noticed that when my 535i reaches close to the 250F mark I feel the car heavy while driving. I feel that the motor plays it safe not to over heat etc...
I noticed that it reaches closed to the 250F temp mark when driving a lot in traffic.
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10-04-2023, 09:29 AM | #17 |
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Hey everyone. I was hoping I could bounce a similar scenario off you guys. I'm fairly new to BMWs and currently drive a 2014 535i M sport with 72k on it.
I was stuck in heavy traffic while I was driving to work this morning, I noticed that the temperature gauge was drawing closer and closer to the halfway point. I normally notice the temperature sits a little north of the middle point of 140 - 250. I didn't receive any warning messages from the dash. Would anyone consider the temp gauge climbing to the halfway point overheating? I'm just not sure if I just stumbled upon a problem and I've just been lucky enough to catch it early on. Any feedback on this would be greatly appreciated. |
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10-04-2023, 09:56 AM | #19 |
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Thanks, Train.
I wasn't sure, so I figured I would ask. I'm trying to get familiar with the normalities of the car. I am the third owner, and I'm not sure how much preventative maintenance. The last few owners have done to the car. |
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10-05-2023, 01:12 PM | #20 |
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There always be oil 'temp variation' between the cars that are equipped with S823 Hot-Climate Version and those with 'cold climate version'. S823 option includes auxiliary engine oil cooler/ radiator that mounted behind right fog light.
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10-06-2023, 10:36 AM | #21 |
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My 2015 535i with the aux radiator (hot climate option I believe?) usually is under 250, but occasionally on long drives sitting in traffic in summer it will be sitting right at 250. Never had any kind of overheat warning.
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