what do yall recommend for flushing radiator

I expect the inside of the engine looks about the same, so best to put your flush in and run the tractor until it gets good and hot or even all day if you use a mild flush like citric acid/citrate. Then drain the radiator and block drain before flushing out with clear water.

Sounds like yours is not too bad if it didn't get "in the red" hot pushing dirt.

Here is an extra thought.

Whatever you use to flush the cooling system, I think the engine, whether a Cat or other internal combustion engine, should be run it until fully heated and for a few hours or even longer. THEN, drain the whole system several times and put clean water in the system each time and run the engine several times again, with fresh clean water each time and THEN drain it all again and then put new water/coolant mix in and you should be done.

That is what I'd do.

took the top tank off today and about half of the tubes are stopped up, any ideas what i could use to rod it out with?

To rod out a Thirty radiator I used ~3' of "Signoid" type steel pallet strapping. It was ~1/2" wide X 1/32" thick. Don't remember if I folded over the lower end though (it was in the early 1960's).

Daron

To rod out a Thirty radiator I used ~3' of "Signoid" type steel pallet strapping. It was ~1/2" wide X 1/32" thick. Don't remember if I folded over the lower end though (it was in the early 1960's).

Daron