I may be a little premature in writing this up given I haven't done a lot of my own research yet but thought I would get some insight before I go on the hunt.
I recently replaced the coolant in my 1026. It was long overdue for replacement. I think it was back in October when I did it.
All seemed to go quite well, or so I thought.
I refilled with the 50/50 mix from JD. When radiator was full I filled the reservoir up to the low level mark (I think thats what the marking is). See, I'm at work right now so I don't have access to my tractor.
Anyways, since doing the radiator flush, the tractor has had little use (in between mowing season and plowing season)
However, after the next few light uses I noticed a small amount of coolant under the tractor. Looked around a bit but couldn't really tell where it had come from. I had guessed at that time it may have come from the overflow tube from reservoir. I did check the radiator plug and it was tight. After doing some simple checks I kind of wrote it off as an overflow issue.
Since then I've had it out a few times plowing and just last nite noticed another fairly larger pool of what appears to be coolant under the tractor (noticed it after having sat for about a week or so).
I didn't notice any overheating with the tractor back at its last use but then again probably didn't pay real close attention either.
I'm a little concerned but am thinking this has got to be related to me having replaced the coolant (too coincidental that I had never seen coolant leakage and then start seeing it shortly after replacing it).
For now I'm guessing it may be coming out of the reservoir overflow but not sure why that would be the case given it seems far from overfilled when looking at the level in the reservoir.
One thing I'm wondering about is whether the o-ring may have come off the radiator plug before I put it back in. I doubt that is it because I'm usually pretty anal about stuff like that. Even a bit OCD sometimes in that I'll pull it back out to double check.
I'm going to poke around in more depth this weekend but thought I would see what others might think on this or possibly whether others may have had a similar issue.