Hey Gents, do you know of a fitting that will work for a pressure test on an E70 N55? i bought my kit from Amazon and when i use the white fitting, which it says its for BMW, air escapes through that overflow hole. Also on the 2nd road test new coolant leak from lower area this time a Y pipe of multiple hose connections. Again, don't know why this was not occurring during the pre test drive starts and runs last week. Attached is the test kit i purchased.
https://www.amazon.com/dp/B0C2VSX35T...t_details&th=1