Boat Repair Questions? Ask a Marine Mechanic for Answers ASAP
Hello, I am Jose Sebastian. Your automotive expert, It's a pleasure to me to attend your question. Thank you very much for trust in just answer.
Dear customer, it seems to me that the sludge that you observe may be accumulated dirt residues such as rust or old oil from a previous problem that the engine may have had, can you send me some pictures of the sludge?
Dear customer as a general answer the accumulation of rust inside is causing a kind of sludge is like a kind of dense liquid brown colour is produced just by the rust and this is accumulating more and more until it can get to leak, when you are like this what is recommended is to disassemble the radiator and clean it in a chemical bath although other people agree to replace the radiator completely, it is also recommended to replace the thermostat and if the engine is not overheating the pump does not have to be replaced although I recommend that if it can fail in a short time.