Hello, I've been working hard to find a Professional to assist you with your question, but sometimes finding the right Professional can take a little longer than expected.
I wonder whether you're ok with continuing to wait for an answer. If you are, please let me know and I will continue my search. If not, feel free to let me know and I will cancel this question for you.
Please continue the search. The car is losing coolant at a high rate. The exhaust is pushing out white smoke/steam as opposed to blue smoke.
and as temporary fix I'd suggest trying some of this as it can last thousands of miles sometimes