Quote:
Originally Posted by Jbonly21
Quote:
Originally Posted by AleksDeRussian
Sorry, got really busy with the holidays.
I topped off the engine reservoir and it never went down again. The intercooler reservoir took a lot more effort to fill. I would fill it and run the car for 10mins and it would be low again but after 2-3 tries it stopped disappearing and bubbling and it's been holding steady ever since. I used Bmw coolant mixed 50/50.
Honestly don't know what was going on since it's a closed system, no sensors went off and car temps were normal even during sprinted driving. I'm keeping an eye out on the coolant levels and they are holding steady. My oil report came back and they suspect coolant in oil but said it's so small that it might be an additive and need to see the next few samples to confirm.
Probably will change the intercooler as a precaution or at least take it off and check it out.
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Your Inter cooler is leaking common problem on s55 engines.
https://f80.bimmerpost.com/forums/sh...?#38;t=1570544 |
I know it's a common problem but both expansion tanks have been holding for weeks now. Would the main expansion tank be low due to leaking intercooler too?