If you drive a vehicle or other piece of equiptment through fields, you may have trouble keeping the radiator clean. Seeds and chaff can clog the tiny spaces between cooling fins, and be very difficult to clean. I have found a simple piece of window screen placed flat against the front of the radiator will not restrict airflow noticably, but will make cleaning as simple as possible.
And he said, "I want to live as an honest man, to get all I deserve, and to give all I can, and to love a young woman whom I don't understand. Your Highness, your ways are very strange."
Don't forget that a quick rinse from the backside of the radiator to the front will clear a lot of that in the field. It will at least keep your moving until you get back to the barn and can blow it up properly. Shut down the engine (power off the fan if electric) and spray inside the engine compartment towards the bumper.
Surfs up space ponies, I'm making gravy without this lumpy, tiny ad: