OK I finally got the hybrid cranked last night. It only ran for a few seconds before tranny fluid was coming out of the flywheel cover. My first thought was that the torque converter seal was leaking. It was bed time so I turned in for the night. Then I remembered that I had plugged the oil cooler lines because I hadn't got around to hooking up the cooler. My question is will this cause back pressure in the tranny making it leak. The fluid that came out looked like it had some air in it - kinda foamy. It's been freshly rebuilt. I plan connecting the two port with a cossover line tonight but just wanted some advice first.