So I've had this coolant leak on my 13 e70 LCI but really slow. It finally developed more now where I could identify where it was coming from. I believe it's the bottom hose on the expansion tank.
Question: when I look down there from topside the clamp is on and it looks completely normal. What would cause a hose to leak all of the sudden like that??! I've had the vehicle a year and a half and haven't done anything coolant system related. One day about a month ago the low coolant warning came on and I replaced the couple capfuls that were missing upon inspection. Now it's a little more noticeable.
Do I replace the hose or cut an inch or so off the end depending on how much of the tip is cracked? Or is it the whole hose that has failed?


Sent from my SM-N960U using Tapatalk