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      05-28-2021, 10:58 AM   #103
jeremyuhh
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Drives: 2015 M3
Join Date: Feb 2016
Location: Canyon Country, CA

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Quote:
Originally Posted by tdott View Post
Quote:
Originally Posted by jeremyuhh View Post
Yea I do have a photo. I'll update the thread with the whole install. I actually tried pushing it open and no luck. I thought maybe I'm not squeezing or pushing hard enough because I was able to compress the coolant thermostat. It wasn't wedged, it came out easily but I did notice a crimp in the center of the thermostat. Not sure if that normal.

Anyway I installed the VAC diverter valve and with 75F weather AC on freeway driving mild traffic oil temps stayed below 210. Will report coolant temp from my drove home later on.
Is your oil cooler still cold after a drive?
Just did a 22 mile drive. About 18 miles highway, no traffic. 2 miles heavy traffic, 2 miles street driving. 62F ambient temp. AC off.

Coolant temps: steady 81-83C Mostly 83C during no traffic, traffic, and street. Also good to note that I used a 50/50 mix of bmw blue coolant with distilled water and some water wetter.

Oil temps: between the 2 and 1 on 210 mark. Dropped and stayed above the 2 once I got on the freeway, also in traffic and just a hair passed the 2 on the street.

Oil cooler: Hot AF.

Conclusion: either the new coolant thermostat fixed it but I'm leaning toward the oil diverter valve. I warm up the car for an extra 5 min in the garage and take the 1 mile route to the freeway entrance vs the .5 mile from my complex. I think it's safe to say I've fixed my unusual oil temp behavior. Will continue to report if anything unusual happens.
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Last edited by jeremyuhh; 05-28-2021 at 01:01 PM..
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