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Old 11-19-2012, 08:53 AM
Kens540i Kens540i is offline
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Location: Bolton, Ontario, Canada
 
Join Date: Jun 2007
Posts: 3
Mein Auto: 2002 BMW 540i E39
Thanks for all the feedback. Hopefully I will respond to everyone.

Temp does not go past 12:00 unless really hot day in summer sitting on really hot highway and then just a little bit.

Does this happen in heating season.... not really but I guess I could answer yes. This happens when the seasons change so in fall I start to use heater and in spring I use it less. I would further clarify this by saying I leave the auto temp set at 21 C and just change the air flow from the vents to be either cool/cold to warm/hot air.

Re the pan. Definitely not from back on engine. The pan I was referring to is right underneath the Rad and there is a air gap between this "drip tray" and engine. The fluid is in the center of this pan, no signs on either side of pan.

Yes I drive this car all year round. No I do not check level, I just wait for light. I will mention again I see this pool under car. I back into garage so under the front end is really noticeable. I see the pool and within a week the light is on.

Just had car in for "Service 2" and the mechanic said they checked and no leaks.

Would a faulty thermostat leak periodically and where would I find this bypass hose?

More info on the Rad service I had a couple of years a go. It was leaking coolant into engine so they replaced gaskets, and hoses and expansion tank. Had a small leak in a small hose, top right of rad and when they replaced it they cracked rad so brand new rad. I was hoping this would be the end of the seasonal leak, it wasn't.

One of the service advisers said if you own a 540i adding coolant was just part of owning this vehicle. I laughed but I beginning to think this is a fact, no a myth.
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