730, M30 E32 1992 heater - water leak

[signetone]

730, M30 E32 1992 heater - water leak

Hi

Looking for advice.

I have a water leak into the car from the heater. It can have only started a
couple of months ago when I topped up the coolant. A thing i do not
normally have to do. The leak is slow - dropped to an inch from the top up tank in 2 months or more.

I now have noticed damp under both from car mats, worse on the passenger side and when the vent to the rear seats is opened water can be heard and I have drawn some off today with a tube and it is coolant. I am not really a DIY
car mechanic [but do have a haynes & Bentley manuals] the car is 1992 and does not warrant going into a BMW garage which is 80 miles away.

I feel that the heater radiator has sprung a small leak and over time has
collected in the area. I am wondering if a radiator leak sealer would stop
it - would there be any harm in trying. I only do about 1000 miles per year
and only local.

Would this be easy to check, by taking out the glove box?

Any advice would be appreciated. Even if this is a short fix - that would be
ok - i could clean the carpets etc. Over 2 months the water level has
dropped by about 1.5" down the filler but not brought up an alarm.

I think it's time for the car to go. It has given me 6 years trouble free service except for exhaust and brake pipes. The mechanic friend who used to service the BMW's has moved away.

Any advice would be appreciated.

Thanks