Oil temp question

[wrk.eat.drive.rpt]

I would like to revive this thread as I have an 08 e92 m3 with these exact same scenario happen to me today In very easy going temperatures 23C in California going backroads uphill Hans driving. Somewhat hard. My question is, I don’t find this ok or comfortable. What can I do to make things better? New oil cooler???

[Helmsman]

Plenty threads incl more updated then this one mate, I'd do some searching for the various good advices to be found.

[pbonsalb]

I would like to revive this thread as I have an 08 e92 m3 with these exact same scenario happen to me today In very easy going temperatures 23C in California going backroads uphill Hans driving. Somewhat hard. My question is, I don’t find this ok or comfortable. What can I do to make things better? New oil cooler???

I would learn more about the expected oil temperature range for this car and about oil in general so you can find an occasional oil temp of 235F during hard driving to be ok or acceptable. If you have owned the car for a year or more and the gauge never went up this high during identical driving, then you have reason to question what has changed. Apart from that, a temp of 235F is perfectly fine for a synthetic oil.

There are aftermarket oil coolers you can buy if you track your car. Next to no one needs one for street driving.

[wrk.eat.drive.rpt]

appreciate the feedback and I've definitely searched other threads, I responded to this one because the scenario is the most similar to mine...
From the threads I've searched I can't seem to find a reasonable conclusion. anything from
1. It's fine/normal.
1a. It's not normal (drive on track at over 100 degrees and never went past 210)
2. water pump/thermostat
3. radiator or oil cooler needs replaced/updated.
4. Coolant issue
5. Early warning signs of bearing failure.
6. Fan etc.

If this is in fact normal I can live with it. but being uncertain and going on middle of nowwhere 200 mile backroads drives makes things feel very dicey.

Any additional help will be greatly appreciated.

[pbonsalb]

What is shown in your picture is of absolutely no concern.

[wrk.eat.drive.rpt]

appreciate that... for testing purposes. I'm going to (in order)
1. Flush/purge coolant.
2. change thermostat
3. change water pump
4. check/update/replace radiator/oil cooler. (OEM only)

and see where that takes us.

My only remaining concern based on forum research is that, it's happening to folks, only after a couple years of almost no change in oil temps.

[Helmsman]

Originally Posted by ethan9273

appreciate that... for testing purposes. I'm going to (in order)
1. Flush/purge coolant.
2. change thermostat
3. change water pump
4. check/update/replace radiator/oil cooler. (OEM only)

and see where that takes us.

My only remaining concern based on forum research is that, it's happening to folks, only after a couple years of almost no change in oil temps.

Ethan, for the fun of it did you check temp with a scanner as,well? For instance Carly provides cooling and oil temp separately. It should obviously give the same but at least confirm if the gauge meter is playing some tricks and not correlating correctly.

[wrk.eat.drive.rpt]

good point! I'll make sure they check that...
my local shop that focuses on e90's says that they see this and they do a lower temp thermometer/full flush+purge of coolant in case there is blockage/and redline water wetter. So we'll see later today and report back...

[pbonsalb]

Interesting. Troy Jeup, who has more experience rebuilding S85 and S65 combined (mostly S85) than anyone else at close to 500 engines, recommends a hotter coolant thermostat to reduce wear on a street driven car.

[wrk.eat.drive.rpt]

did some research and decided to go back to OEM thermostat. We'll see what happens.

[pbonsalb]

I have been using the Troy Jeup recommended hitter thermostat for about a year.

[MaximusB]

Originally Posted by pbonsalb

Interesting. Troy Jeup, who has more experience rebuilding S85 and S65 combined (mostly S85) than anyone else at close to 500 engines, recommends a hotter coolant thermostat to reduce wear on a street driven car.

Highly doubt he built close to 500 engines. 500 engines in 12 years (since 2008) is +/-41 engines a year, which mean one engine every 8.8 days.

[pbonsalb]

I assume he has a shop and he built or oversaw the build. If you have reliable information that he is lying, please share it.

[wrk.eat.drive.rpt]

Same problem after water pump thermostat and flush. Stupid e92. Nothing but problems . This is after owning a z4 m coupe that has been problem free

[jballer123]

running the oem thermostat my oil temp stays right at 210 in 90ndegree weather and my water temp at around 185 to 190 max, I watch it on a obd2 reader.

[wrk.eat.drive.rpt]

Jballer123 does the regular oil temp readout show higher than your 210 readout on the obd2?

[jballer123]

no it's the same

[wrk.eat.drive.rpt]

Anyone have any insights? A bit desperate, love the car but I don’t want to sell it. May have if I can’t solve this

[pbonsalb]

How is your engine fan working. It has 2 speeds. High is pretty loud. Do both speeds work? If my oil temp is past about 220, the fan runs high.

[wrk.eat.drive.rpt]

Ok. I got the oil temp around 220ish today and pulled over to see if the fan was working. It was definitely working but definitely not on the high setting. I guess is this was the culprit it would be a fan relay issue?? Anything definitive I could test to assure that this was the problem ?

[pbonsalb]

I don’t know the answer since mine works fine, but high does not turn on until 225, at least that is my guess. Maybe it is 230. You could probably look up the fan switch temp or maybe it is programmed into the ECU and uses a sender and there is no switch.

[Helmsman]

Originally Posted by ethan9273

Ok. I got the oil temp around 220ish today and pulled over to see if the fan was working. It was definitely working but definitely not on the high setting. I guess is this was the culprit it would be a fan relay issue?? Anything definitive I could test to assure that this was the problem ?

Only guessing here Ethan but if the fan went down in speed, I'd imagin the air cooling of the radiator would still be sufficient assuming fair speed with the car. And you see high temps even at high way speed/moderate throttle yes?

On another note, if the car has what you want except for this temp issue, I'd definitely suggest you keep working to solve that rather then as indicated selling. These cars are getting old so wont be easier to find another "perfect" example.