Can I put a bigger radiator in my jeep?

My 04 Jeep grand Cherokee overheated and there was a Pink paste in the radiator that wouldn't allow meto put water in it?

• Answer:

  the pink paste is usually rust mixed in with the antifreeze.. or it could have been a stop leak added to it ... in either case the antifreeze chunks and clogs the valleys in the engine and heatercore among other things so adding antifreeze can be quite difficult ..... one thing ya can try is to keep the jeep overnight not runing when the engine is very cold .. pop the hood and remove the radiator cap.. not the plastic overflow but the cap on the radiator itself, there shouldn't be any pressure as the car is cold ... try to add as much as possible very slowly until it is as full as ya can get it .... than leaving the cap off start the jeep being clear of the radiator and cap turn the heat on full blast and let it warm up than you should be able to add more while its running ...be careful not to burn urself when ur done put the rad cap back on with the engine still running ... i would suggest to take it to a shop to have the system pressure tested and flushed