radiator hose leak - '06 530xi
OK ... so I feel really dumb now. My coolant level keeps dropping every 3 weeks or so and I see white spots right where a cluster of radiator hoses come together at the top front of the engine. So it looks like one (or all) of the hoses is leaking when it's under pressure (I've never seen it leaking by the time I get the hood open).
The hoses don't feel old/brittle and they don't feel loose (can't twist or wiggle them on the fitting they are clamped to). I wondered if they just have corrosion where they clamp down and need to be unclamped and the seating area cleaned and then clamped down again. BUT I can't see how these clamps loosen/tighten. They look like permanent clamps. Seriously? Am I supposed to replace the entire hose cluster because one of my hoses needs to be tightened? Or is there some magic tool to loosen these clamps? (there is one small hose with a normal worm clamp - but it doesn't appear to be leaking)
After discovering so many things being dealer only - like how you can't check your transmission fluid or top it up except to go to the dealer - I fully expect to hear back from you guys that I can't tighten a hose clamp and need to take it to the dealer and pay $1000.
Anyway hoping someone can reveal the secret to the radiator hoses. Or can you tell by this photo where I should be looking for the leak?
Thanks in advance!