I'm having some doubts that oil cooling system on my MC works as it should. I've read that MCs usually run hotter than M3s. But I've owned both 3.0 and 3.2 E36 M3's, but they definitely didn't get that hot with oil. In the MC, the oil gets much more than just marginally hotter. I noticed that any spirited driving gets my oil very fast to 120°C, and it seem rising. At that point I back off.
For example: 10 minutes driving highway at constant speeds 200 km/h (5000 rpms in 5th) at 5°C outside temp, gets my oil to 120°C. Slowing down to around 150 km/h and it takes about 10 minutes to drop to 110°C.
Another example, the windy hill climb road with speeds 60-120 km/h and I takes about the same time (10 mins) to take my oil to 120°C. Dropping is slow as well - it definitely isn't enough to backoff for 3 minutes, it takes quite more to fall at least to 110°C.
The water temp seems rock solid at 1/2 of gauge all this time. I've also checked ducting to the oil cooler and all seems fine. Engine runs flawlessly in all other aspects. I have no idea what could be wrong, and I hardly believe this is normal. Well, I have two ideas: (1) the oil coolers thermostat might be disfunctional, or maybe (2) there's a problem with oil temp sensor. Am I missing something here?
EDIT: I've mistakenly posted in general section. Can admins please move to tech section, thanks.
For example: 10 minutes driving highway at constant speeds 200 km/h (5000 rpms in 5th) at 5°C outside temp, gets my oil to 120°C. Slowing down to around 150 km/h and it takes about 10 minutes to drop to 110°C.
Another example, the windy hill climb road with speeds 60-120 km/h and I takes about the same time (10 mins) to take my oil to 120°C. Dropping is slow as well - it definitely isn't enough to backoff for 3 minutes, it takes quite more to fall at least to 110°C.
The water temp seems rock solid at 1/2 of gauge all this time. I've also checked ducting to the oil cooler and all seems fine. Engine runs flawlessly in all other aspects. I have no idea what could be wrong, and I hardly believe this is normal. Well, I have two ideas: (1) the oil coolers thermostat might be disfunctional, or maybe (2) there's a problem with oil temp sensor. Am I missing something here?
EDIT: I've mistakenly posted in general section. Can admins please move to tech section, thanks.
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