PrestoneYellow AS105 Radiator Flush and Cleaner-22 oz, 22. Fluid_Ounces

The flush and clean worked well,should have shopped around for price overpaid for product. Convenience has a price with it. Took a while to get

Drain your radiator and distilled water with this cleaner and drive around for a while.Drain the radiator again.Crank your engine and add dawn dishwashing liquid and fill with distilled water let it idel with the radiator cap off 5 minute's open the drain plug and pour regular water into the radiator with the engine running until you don't see soap sud's.Never stick a water hose in your radiator fill kneck you can blow your heater core.Clean the resavior.Crank your engine and fill with antifreeze and distilled water.Municipal water corrodes metal's use distilled water.

My radiator had relatively clean coolant when I drained it, a couple of particles sure, then I filled with this cleaner and fresh deionised demineralised water, ran for 20 mins and oh my it was brown, so I drained again and repeated the process but left it in for 6 or there about a hours of driving, well super clean result it dislodged everything. I then refilled with water again dropped the bottom hose out and removed the thermostat and replaced with new and connected everything again, filled up with coolant as per spec and drive ensuring all air pockets were gone, took another small sample from the drain and it’s spotless coolant. I didn’t expect to go so far with it but when I saw the progress I had to keep going simply because of the way this works. Very impressed.

Extremely nice product. Its worth every penny.

It does what it's made for,gets the built-up grime out of your engine & refresh 's your gadgets. Just as long as your coolant has not turned into syrup .do it early you won't regret it.fresh oil & a coolant change is the life blood of your engine.2 bottles is better than 1. Danni o. Seattle,wa