Like all things, it depends on how well you want it to work.
Best, take the radiator out and have it rodded at a professional shop where the tanks will we removed, then entire radiator boiled in a caustic acid to take out the rust and deposits, rods are run thought the channels and all holes are repaired. Replace the hoses, clamps, thermostat and button it up checking for leaks.
Good is to drain all the fluid, including make sure the defroster valves are open to drain that fluid as well, take out the thermostat so water will run free though the engine, and push water through it until it runs clear. Then put in a high detergent solvent to finish cleaning out the interior channels, run the engine for a min of 20 min and perhaps much longer if it needs it. Flush out the radiator again when cool, until it flushes clear. Button it up replacing anything that leaks.
If the car is a junker, you don't intend to keep it running but just need to get it running for some specific short-term tasks. Empty the radiator, and fill it with clean water with an active flushing agent. Button it up and watch the temperature gauge. Use the engine checking for leaks and listening for the water pump to protest with a squeal. Flush it out when you can.
Water works better at heat transfer than anti-freeze (ethylene glycol), but it doesn't have the lubricants the water pump needs internally to keep spinning. Water alone long term will seize the water pump, and lead to rusting in deep cavities in an cast iron block.
To get rid of rust on your John Deere 730, you should find a rust remover. Then apply the rust remover on your tractor. This should remove all the rust.
I don't think you are able to fix this rust problem, take you car to your local repair shop or car dealer. They should be able to take care of your problem and fix it for you. Hope I can help.
the hoses leading to and from your radiator might be clogged. If you had a rusty radiator, the rust may have clogged the hoses that carry the coolant. you should check all your hoses and even flush them out.
If the rust and metal that builds up in your radiator isn't flushed properly then after time it will clog up your heater core. That's a pretty pricey fix by the way.
The cast iron in the block is starting to rust. Drain the radiator, put in a good radiator flush solution and follow the directions, then fill the radiator with the right coolant. Since you're already having rust problems, put in some rust inhibitor. You may need to clean it again and put in more rust inhibitor after things settle down.
To get rid of brown water in your radiator, you will need to flush the system. Start by draining the existing fluid, flushing the radiator with water until it runs clear, and then refilling it with a fresh coolant mixture according to your vehicle's specifications. If the issue persists, it could indicate a more serious problem with rust or corrosion in the radiator that may need professional attention.
Car magnets doesn't cause rust.
Vinegar dissolves rust. If you want to remove rust from an item soak it in vinegar for a bit and that should help get rid of it.
The cooling gets worse. The engine can heat up. A leakage may happen. You may solve this easily by using an appropriate spray to remove rust. Then wash the radiator with a powerful jet of water.
question- what was the car without a radiator? well it's probly a car without a stinking radiator,,,
Rust, It is time for a coolant flush.
then you should have your radiator flushed because you have rust in it. FYI: antifreeze can strip the paint off of your it you spill it. Also, you may need to replace your radiator if the antifreeze is leaking, it may be through a rusted/corroded portion of the radiator.