How expensive is that?head gasket leak possibly, thats the most probably cause if i didnt end up elsewhere. also, welcoem to EF! have you checked the plugs? iirc you can have a head gasket leak w/o it mixing w oil
3.5 v6head gasket is $$$ not expensive in parts, but many hours of labor. lots of stuff needs to be removed for head gasekt. which engine do you have? they make tester kits also that one could use, but ive never tried one so not sure how well they work (fingers crossed, havent had a leak yet!!!) another option is something like K-Seal which fills in the crack in the gasket, but its not a permantnt fix imo, all it does is clog the hole
That should show up In the oil.Most likely your waterpump is leaking. With a 1.5 week interval to empty the reservoir, you may not notice the leak as the drops that come down below the alternator get blown away.
Looks like after putting 1/2 gallon coolant in last night, it is already almost empty. Wife mentioned that it seemed to hesitate on the highway. Checked oil still no water in oilCannot see a leak anywhere. Oil looks ok. In about 1 1/2 weeks coolant reservoir empty. Any ideas?
Does the engine have an internal water pump? If so, you need to stop driving it and get it into a shop before there is catastrophic engine failure.
There is no water in the oil.ah crap forgot about those internal WPs. iirc the 3.5 did some with it... but dang! using 1/2 gal coolant via the wp? if im not mistaken the coolant lost from the wp goes into oil right?
Also not certain it is the water pump. I hope not.There is no water in the oil.
None showing up that I can see.For the waterpump, there are a couple ways for it to leak.
1. Out the weep hole and out under the engine.
2. Past the shaft seal, which does into the engine.
3. I thought there was a potential internal gasket issue as well, but not sure....or is that tied to one of the above failures?
Losing a 1/2 gallon in a day is a lot.
If it was leaking into the crankcase, I'd expect the oil to look like chocolate milk by now.
I was also thinking head gasket, but that would likely leave a cloud of steam out of the exhaust at the rate it's disappearing.
You sure there's no coolant on the ground or under the engine?
Also not certain it is the water pump. I hope not.There is no water in the oil.
Mechanic told me it was the waterpump. They said the timing chain needed to be replaced when you change the water pump. Is that correct?Also not certain it is the water pump. I hope not.
None showing up that I can see.