Quote:
Originally Posted by twinspool
@bigblack48is - where can one acquire this said lower pressure res cap? and is it BMW?
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I went this route (
https://www.germanautosolutions.com/...12_bar_cap.php )
Then i realized after you can just get one from the parts counter at BMW or order it online. they all state the pressure on them. I think the BMW one is 1.4 bar now.
I have been running the GAS one for years without any issues. I add about a cup of blue bmw coolant per year.