Originally Posted by tunaglove
Doing this will ensure you never have a pressure build up in your
separated IC circuit. This is a BMW steering fluid reservoir and it has a
vented cap.
I had a set up like this before I got the Needswings coolant separation kit.
I'm still thinking of adding the reservoir I had and connecting it to the overflow like yours, but leaving the original hose from the Needswings kit that connects from the OEM coolant reservoir closed off from circulating to the inter cooler.
Does your reservoir have any hoses on the bottom of it going anywhere? I hope what I've written so far makes sense lol.
John.