95 Buick Lesabre 3.8 V6, missing coolant, can't find leak anywhere?
 

I have a 1995 Buick Lesabre 3.8 V6 40,000 Miles. I recently noticed that my overflow reserve antifreeze tank was empty. I went ahead a filled it and within 5 days, it was empty again. The water pump, fluid and thermostat was replaced last year. I can't find any leaks anywhere. Where is it going? Car runs strong. Please help!

Check the oil and see if there is a creamy color or almost milkshake color coming over it. Or if you know how, run a compression check on it. Could also check for a large amount of water coming out of the exhaust. If it runs for 5 mins and there is a noticeable pool (fist sized or larger maybe?) under the exhaust, that is also sometimes a good sign to show where it is going. Dunno, just some stuff to start with.

:mad:thanks. My chevy truck 4.3 v6 shoots out alot of water at start up as well, should I be worried?

Where is shooting water from? Any time you are losing coolant, its a sign of a new engine to come unless you fix it.

it's shooting from the exhaust. the connections of the exhaust and the tail pipe. It's like condensation... i think?

Prob cracked head gasket, but could be other things as well. The fluid coming out of the tail pipe is probably antifreeze that was burned off by the fuel system. Compression check at a garage should be like 25 bucks to confirm this. Well worth it so you know what to watch for.

How many miles, what year, make, model?

It is a 1991 Chevy K1500 4.3V6 4X4 Pickup. 80,000 original miles. I often check the overflow tank for the antifreeze and the radiator. I never find it low. If it was antifreeze leaking out of the exhaust and the joints, wouldn't I eventually have to add antifreeze? Just curious.
On the Buick, we found that it was a cracked plastic fitting located on top of the water pump. We replaced it with a metal one, all set, no more issues. It's good to know that the intake manifold is a problem part. Thanks

Man try to contact with the service provider ..
They will surely be helpful for you...