92 Losing Coolant

[jcolegrove]

hi all,

have a 92 w/ 130k. everything fine and well maintained, except i'm losing about 1/2 coolant reservoir slowly over every 2 months or so. no smells, no startup mist, no water in oil per oil report, power fine, etc... any thoughts? thanks.

[BigCliff]

hi all,

have a 92 w/ 130k. everything fine and well maintained, except i'm losing about 1/2 coolant reservoir slowly over every 2 months or so. no smells, no startup mist, no water in oil per oil report, power fine, etc... any thoughts? thanks.

Does the radiator drain plug have a rubber o-ring round it? If so then if the o-ring wasn't renewed when the antifreeze was changed it could be the source of the leak.

[jcolegrove]

good thought... i will try there.

was just under the car-- no sign of water from the water pump... i'm still baffled.

[davepruce]

Mine seeps permanently from the seal round the sensor in the top of the reservoir. I've replaced the O ring, put tape (the white stuff used for radiator valves (PTFE - just remembered!!)) round the thread, nothing makes any difference, so I just top it up with about a mugful every month or so.