[TinCanSailor]

Did you coat or wrap the downpipes? They put off a lot of heat. Keep an eye on the coolant level and consider flushing the coolant if you are unsure if it meets specs. Run the car in sport mode for a few miles but don't run it hard. This will allow the car to cool faster before being parked.

If you lost fluid and it isn't coming out the expansion tank or a hose then, in my mind, there is only one other pace for it to go, into the oil. If you haven't done an oil change yourself in a while then I'd make it a priority to do one soon to see if water made it into the oil/pan.