When I accelerate hard on the highway. I get a lot of steam coming out of the back of the car. a lot. I am losing antifreeze a little bit each day and I'm thinking I'm probably getting any freeze in the exhaust. I thought this might be. The bypass in the exhaust it's a known issue but since this happens under heavy acceleration, I'm wondering if it's something else. I have a 2017 prius 44. Any insight would be greatly appreciated.