Prestoneyy AS105 Radiator Flush and Cleaner - 22oz, Pack of 2

It works great been using it for years on all different radiators it's hard to beat and priced right for a 2pk.

Works as well as it states, just leave it in for a couple of days to work and be ready to drain responsibly and do it again with distilled water. PERSONAL WARNING: Do not attempt doing this kind of flush if the weather has a chance of freezing as you will do irreparable damage to your engine block.

I've got a 1991 Mazda Miata, and soon im replacing my water pump and radiator. Figured I'd go ahead and flush my coolant now to ensure it was nice and clean. The first bottle I poured in and let it run through my car for a week (being the winter it only moved about 40 miles in that time) and when it came time to dump it let out a TON of filth from my coolant. Took about 4 flushes to get the car totally clear, so I'll be ready to drop in my new pump and radiator without concern soon.Did I need to use this product? I cant say for certain, but I'd rather have it and not need it than need it and not have it.

My order of this product never arrived. Based on previously using Prestone radiator flush and cleaner it seems to work well. I have never had rust in radiator so I'm not sure how well it removes rust but it seems to clean system well.

Did actually what it's suppose to do. I only use Prestone