What is the best product for cleaning out a car radiator?

Question

I need to clean the gunk out of the radiator on my KIA Sportage and I purchased a Prestone product that you mix with water and then drive about 6 hours and flush it out and refill with antifreeze. I don't know anything about this product and I would like some input about it and about other products that might work better. The product I have is called "Prestone - Super Radiator Cleaner"

Answer 1

could try Preston's radiator flush,and the auto parts store sells a kit you can hook up to the heater hose to flush out the radiator..

Answer 2

I do not know about this product but STAY away from anything that has acid in it.I used a product that you did the same thing as the prestone and not knowing I had a aluminum head the acid ate a small hole thus blew head gasket.Only had 40,000 mile on the truck.BE CAREFUL are have a shop do it for you..

Answer 3

Normally alote of these products are very good, but you are going to have to flush the system out many times to get this out of the cooling system. Make sure you have the heater on when doing this so you have flow, and keep the heater on during the total process. Also after run clear water in the system for 2 days and watch for leaks, around radiator, hoses, clamps, water pump, and cylinder head area. Normally having a dirty coolant system, you had been losing coolant for a while so look for where the coolant has been going for the last year or so.

Answer 4

If the radiator is pretty clogged up you wont be able to get it completely cleaned out with over the counter chemicals, you will need to have it professional cleaned out by a radiator shop..........