That stuff they sell as radiator flush. That wouldn't do a bit of good in a radiator that's getting plugged with carbon and lime scale would it?
The one in the 2-135 must be getting plugged. It seems to run a little hotter every year. Recoring is no doubt going to be the only way to go. I had one rodded out from a 4040 Deere one time,but it didn't last a year after that and I had to have it recored anyway.
The shop that recored the one from my 2-105 a few months ago won't even consider rodding them anymore.
Muriatic acid would probably just eat up the tubes before it would have any effect on the scale too wouldn't it? And then there's the problem of neutralizing it.
The one in the 2-135 must be getting plugged. It seems to run a little hotter every year. Recoring is no doubt going to be the only way to go. I had one rodded out from a 4040 Deere one time,but it didn't last a year after that and I had to have it recored anyway.
The shop that recored the one from my 2-105 a few months ago won't even consider rodding them anymore.
Muriatic acid would probably just eat up the tubes before it would have any effect on the scale too wouldn't it? And then there's the problem of neutralizing it.