It is too tedious to try to read through all the previous replies, but I had a two year old toilet a month ago, that would do the same thing, after I had reset it, (not using one of those rings with the plastic insert). After trying a couple of repairs I turned it over and finally found a very small dent in the bottom. I asked the customer if she had a broom and I pulled one piece from it and stuck it into the dent. It went all the way through the toilet into the water way. I had to contact the Kohler company because the normal guarantee is for just one year.
YES!!! I pulled the toilet off this morning, flipped it over and could clearly see where water had been running down the back of the bowl...inside the bottom, not on the outside. The unglazed portion of the bowl was wet, and yet, the water level in the tank hadn't gone down during the night. That got me to thinking that it must be a tiny pinhole somewhere near where the trap (I think that's the correct terminology) is. I shined a flashlight in there, but couldn't see any defects or holes, but did notice some dimples and a spot where a number was stamped into it. I knew it wasn't the tank since I'd drained it yesterday and disconnected the water supply.
I smiled lovingly at my hubby, and he agreed to return the bowl and get a new one. Gosh I love that guy...lol
So here's the "funny" part. When he went into the store and told the guy what was happening the guy says "Oh gee, we had a whole shipment of bad bowls come in two months ago, but I thought we had returned them all...sorry. I'll get you a new one and make sure it's from the new shipment."
Great guys, huh?
I installed the new bowl this morning after checking the horn one more time to be sure it was all level n stuff. Didn't use a wax ring with the polyethelene insert this time...just a plain old wax ring.
Topped it off with the original tank and so far so good. No leaking at the base!
Then again, it's only been 4 hours, so I'm still holding my breath. Prolly won't breathe again for another 24 hours or so...hehehe...I'll be as blue as the rest of the bathroom, huh?
About the flange, since I've had so many questions on it. It's securely attached on top of the flooring, has no cracks in it and sits about 1/4" above the floor. That's a guesstimate on my part...it's just a hair above the floor.
The floor is nice and level, so hopefully with this shiny new porcelain bowl the whole thing is going to work as intended and I won't have to scrape any more wax rings off.
On a side note, a lot of my girlfriends pay big bucks to a manicurist every month to have their hands dipped in parafin. It's sposed to make your skin all soft and smooth. Have I got news for them, my hands have never LOOKED so good! LOL
Strawberry