This is a case of "if you must ask, just don't do it".
Dawn dishwashing soap is your friend.
Nah, nah, nah: ASK, comment, ignore.
I highly recommend joesmith123 cleaning and sandblasting service for all your cleaning needs.
my new process
Use most generic, non-plausible username possible.
Level ground with rake.
Take apart whole engine.
Clean radiator with file pushing down hard.
Polish with abrasive.
Install backwards.
Install forwards.
Tighten bolts with wrench--new idea of using a wrench instead of hammer to share and help everyone!
Wrench bad idea, breaks bolts, hurts fingers, use hammer instead. Replace broken bolt with carrot.
Fill radiator with gator-aide from real gator as test of cooling system improvement.
Comment on how radiator is now useful as a lawn sprinkler.
Ask forum how to fix radiator.
Ignore forum, ideas way too expensive.
Plug leaks with chewing gum and let bake in sun to harden.
Level ground with rake.
Paint radiator blue.
Take video of engine running with no leaks. Declare repairs success!
Stop taking video as engine starts to make odd sound and strange smell.
Discover cooling system not work without adding coolant. No wonder no leak.
Put original coolant back in radiator, gators are too hard to remove fluid from.
Paint everything blue, including battery held in with string.
Start engine, not sound so good. Remove muffler, now sounds strong. Problem solved.
Gum patches looking weak, do not start engine. Tell forum engine ran great for 10 hours straight with no problem, thank them for their help.
Paint blue again to glue everything together, especially sad looking carrot.
Sell on Marketplace as old tractor in mint condition in need of slight tuneup.
Join excavator forum.
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entire post for entertainment purposes only