Super C Radiator

My SC has a very small leak that I see on the bolster...been that way since I have had it and doesn't change even on a 90F day mowing.

However, how would I know if it is leaking into the engine. I just changed the oil and didn't see anything out of the ordinary. Would I see a separation while draining? I took the oil pan off to make sure there was no glop in there and to check the screen. I dabbed the crankshaft parts with a paper towel and didn't see anything greenish or yellowish.

Antifreeze on the bolster could come from the overflow line also. So what makes you so sure there might be a leak into the oil pan or even internally with coolant on the outside? If it is not going down and not leaving a puddle or signs of bigger leak I would just not fill it quite so full as long as it keeps cool and not worry about it. No point borrowing trouble.

I think that all the old Farmalls will spit out coolant if you fill them too full, which is anything more than an inch over the tubes in the radiator.

Well, I'm not sure how you came up
with the idea that leaking on the
bolster adds up to an internal engine
coolant leak. If you have an internal
engine coolant leak, the engine oil
will look milky or sludgy. One good
way to check is let tractor sit for a
good spell, loosen oil drain plug so
that it'll just drip. If the drips are
just oil, then no leak. If drips are
radiator coolant, then you got an
internal leak.
Leaking on bolster would indicate a
leak in the radiator, hose connection,
or coming out the overflow. Out the
overflow would be a good guess, but
wouldn't have to be. Your radiator
does not have an overflow reservoir.
Should have a small tube out the
radiator neck that diverts overflow to
the ground. These tubes are often
either broke off at the neck, and or
are just gone. If so, overflow just
leaks out the small hole right there
at the neck. Coolant level should be
an inch or two down from neck. Most
people just fill it up, let it blow
out what it wants to. Find its own
level so to speak. But if you keep
filling that inch or so back up, your
radiator will just keep spitting the
extra out when it reaches operating
temperature.
If it is elsewhere on the radiator, or
hoses, or whatever, pressurizing the
system to 15 lbs would aid in finding
where the leak is. Removal of hood,
grill, shroud, and whatever else would
be required so you can see where leak
is.

Fluid should be 2 inches above the down tubes ,in the manual check me on that.

That answers the question. Oil looked consistent coming out so I probably just have the small that I will check into. I fill the radiator correctly....it isn't coming out the tube

On another subject...I gotta say that I sure find answers here...I am new at this engine and hydraulic stuff late in my life.

The SC was super hard starting and it never used to be until this summer. I finally had enough of the carter carb and sent it to Dans for rehab. I cleaned out the gunk from oil pan and reset the valves this week. I did searches on how to do the valves on this forum (as well as Just a Few Acres Farm!) and was told how to do it along with the manuals. Not that I didn't have to deal with the whole clutch area had a garbage bag full of mouse nests and the PO had painted over the DC/1-4 etching with a 1" paint brush stroke.... after getting it all put back together, it started up right away!

I know most of you grew up on these tractors, but the new guys appreciate your advice.