005 Sprinter 413CDI Leaking Coolant from Aircon Drain Hose

[MinMin]

2005 Sprinter 413CDI Leaking Coolant from Aircon Drain Hose at rear of engine.
It started as a drip and now I have to place a bottle under the hose to catch half a litre ever 100 kilometers.

I catch it and put it back in the radiator. Otherwise van is running fine. Radiator OK on a pressure test.

A mechanic tied off the heater-core hose but that made no difference.

Can anyone help please? J

 

[pgh13]

Hi and welcome.
Don't want to insult your intelligence, but are you sure it isn't condensate from cooling the incoming air? it's really hot and quite humid at the moment so there will be quite a bit of moisture in the air which will be knocked out when cooled.
If you've had the cooling system pressure checked; does it seem to be losing coolant?

 

[MinMin]

Hi and welcome.
Don't want to insult your intelligence, but are you sure it isn't condensate from cooling the incoming air? it's really hot and quite humid at the moment so there will be quite a bit of moisture in the air which will be knocked out when cooled.
If you've had the cooling system pressure checked; does it seem to be losing coolant?

Thanks for the reply but the GREEN COOLANT is leaking. I am not using the aircon. I am in Australia and have been driving in cool conditions as well as hot - day and night. A loss of half a litre (more than a pint in American) every 100 klms is hardly a matter of condensation.
Radiator was pressure tested and that is OK.