[Kimes]

Hey, recently I bought new m340i (LCI) with M Technology package (similar to ZTK package, bigger breaks and oil cooler).

In a normal every day driving oil temp reaches 108 celcius (226F), is it normal for this engine?

Few other questions:

1) What is the normal working oil temperature and what is the highest safe limit i can push it to?
2) What temperature oil has to reach before I can start pushing the car?
3) After the ride is finished should leave the engine turned on for a minute or two to let it cool?

[AP]

Whilst I don’t have a b58 (I have a n63tu3), my oil temps are about the same as yours once warmed up so yes that sounds about normal to me

[Paulskit]

Originally Posted by Kimes

Hey, recently I bought new m340i (LCI) with M Technology package (similar to ZTK package, bigger breaks and oil cooler).

In a normal every day driving oil temp reaches 108 celcius (226F), is it normal for this engine?

Few other questions:

1) What is the normal working oil temperature and what is the highest safe limit i can push it to?
2) What temperature oil has to reach before I can start pushing the car?
3) After the ride is finished should leave the engine turned on for a minute or two to let it cool?

1) 108 is a normal temperature during easy driving. When pushing hard it would be cooler, around 102-104. This is what I see on my 340 as well.
2) I usually wait for "warm up" to disappear and then a few more minutes of relaxed driving. It's enough for temperature gauge to reach dead center on the scale. Usually it's around 3-4 minutes of relaxed driving for me.
3) I personally don't care. Car is smart enough to cool itself, you can notice sometimes it keeps flaps open for a few more mins and have fans active after you closed the car. These things are smart, I let it do the job for me.

[AZHusky]

Mine typically levels out at 232F. One thing to keep in mind with B58 is it actually is trying to retain heat to minimize hot/cold heat cycles. Unless you’re tracking the vehicle, I don’t think there is much concern in some spirited driving and letting onboard computers handle the cooling.