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Operating Temperature

Specific discussion about the E89 2009 Z4 (sDrive35is, sDrive35i, sDrive30i, sDrive23i)
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B21
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Operating Temperature

Post by B21 » Mon Jul 25, 2022 9:14 pm

Vagueante wrote: Mon Jul 25, 2022 6:55 pm My 18i, after oil change (BMW oil), in highaway around 120/140KM/h (outside temp around 25º C), its always near the 120 degree Oil temp.

Isn't it too high?
120c is ok…keeping it under 130c is definitely a good idea on a long term basis…

If you have higher temperatures consistently then consider a heavier weight oil like a 10w30 or 5w40 over a 0w20..
We choose to go to on with this endeavour at this time and do the other things, not because they are easy, but because they are hard..

Pondrew
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Operating Temperature

Post by Pondrew » Mon Jul 25, 2022 9:36 pm

FWIW;
My N20 Z4 takes about 10 minutes for the oil temp needle to move past rest (25k miles)
My previous N54 E92 was up to oil temp in about 5 minutes (45k miles)
My B58 F33 takes about 3 minutes to get up to oil temp (11k miles with a virtual gauge)

I think it's mainly due to the plumbing arrangements, the fact that the needles are an indication only and possibly where the sensors are located.

Moisture will evaporate pretty readily over 40oC @ atmospheric pressure; it's where the steam goes that's important.
All good things come to those who wait. I'm really impatient which explains a lot.

F31 320i. Good car.
E89 20i Now fully dried
Z3 'free litre'. Project and a half. Complicated!
Mazda3 sold
Tatty old R56 Mini Cooper. Money pit!

Don_Diego
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Operating Temperature

Post by Don_Diego » Sat Jul 30, 2022 8:43 am

Vagueante wrote: Mon Jul 25, 2022 6:55 pm My 18i, after oil change (BMW oil), in highaway around 120/140KM/h (outside temp around 25º C), its always near the 120 degree Oil temp.

Isn't it too high?
Although it is not big deal this temperature, get yourself a better motor oil :thumbsup: Its bad if it goes past 130 - then most of the engine oils are "cooked" and have no lubricating properties anymore
I run my 30i (N52b30) with Ravenol SSO 0w30 - with higher speed and outside temperature on the highway the oil temperature doesn't go past 110. The only time it goes to 120 is when I drive slowly on a mountain road on a hot day. When I stop the car I leave it idle for a bit, in 6-7 minutes the temperature of the oil goes down to around 100
'09 E89 Z4 Sdrive30i, Deep Sea Blue

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