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Your cart is empty.Prestone Radiator Flush and Cleaner is a 2-in-1 formula designed for light flushing and heavy-duty cleaning for cooling systems to help prevent overheating, the #1 cause of engine failure. This premium formulation is designed to remove heavy rust and scale deposits in neglected cooling systems. These deposits can dramatically restrict coolant flow and reduce heat transfer, which may lead to possible overheating, breakdown, or costly repair. A super-chelating additive effectively removes heavy deposits by drawing metal oxides into the solution. Though strong enough to help restore maximum cooling system efficiency, this non-toxic, non-acidic product is easy-to-use and safe for all cooling system metals.
Greg Mertz
Reviewed in Canada on June 17, 2024
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
Remy Brassard
Reviewed in Canada on February 25, 2024
Laver le moteur d un tracteur de ferme et il a très bien fonctionné
Customer
Reviewed in Canada on February 21, 2024
rien a dire ses du prestone
Steve Kleinheksel
Reviewed in the United States on December 31, 2024
Easy to use
Customer
Reviewed in Canada on September 2, 2023
ONE OF THE BEST COOLANT CLEANER THAT I HAVE EVER USED, A REMINDER IT'S BETTER BEFORE YOU GET YOUR COOLANT FLUSH, TO DRIVE YOUR VEHICLE WITH THE ADDITIVE IN THE COOLANT FOR AT LEAST 6 HOURS. PLEASE READ LABEL.
Cameron
Reviewed in Australia on May 6, 2023
I used this to flush out my Jeep GC Limited. Work an absolute treat and was able to put in new radiator fluid. Would purchase again!
Elias G.
Reviewed in Australia on December 1, 2023
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.
Tony Wang
Reviewed in Canada on January 18, 2019
I used this product on my 2007 Suzuki SX4 when I performed a coolant change while at the same time upgrading my coolant from the green stuff to something longer lasting (longer lasting blue coolant for Asian vehicles). Based on what I understood from the ingredients (which there were really two compounds) this cleaner is just a weak acid. The purpose of which is to dissolve some of the mineral accumulations or, more likely, minor rust in radiators. And while this product did give me an ease of mind when doing the coolant upgrade after having done a flush with tap water, I personally have my doubts of its efficacy for any radiator that isn't neglected for a fair bit of time. For me, since my radiator was decently taken care of, never had the chance to run on regular old tap water due to a bad incident, I did not see the Prestone flush as having done anything. Perhaps there were microscopic accumulations that it was able to dissolve but that didn't translate to anything substantial. With that said, given the price point, you might as well give it a try if you expect there to be a decent amount of rust or other mineral accumulations (perhaps from using non-demineralized water in the cooling system at some point). It may also be good to do this every once so often during a coolant change to make sure that things are clean. For severely blocked radiators or cooling system, this probably won't do anything. A more substantial or professional flush or parts replacement would be necessary. So just keep that in mind because I feel that while this product does work, it seems to over promise a bit.
Joselito B.
Reviewed in Canada on April 10, 2019
Very good cleans my radiator well.
Customer
Reviewed in Canada on March 9, 2018
Did the flush twice (2 bottles) and I see still tons of rust coming out of my system.. water is not clear. So this stuff doesn't neutralize or clean rust.
Nayan Parmar
Reviewed in India on August 17, 2016
Extremely nice product. Its worth every penny.
jordan
Reviewed in Canada on December 26, 2016
This is way over priced.
The Derb
Reviewed in the United States on November 24, 2016
You can't use CLR in a modern engine. But you can use Prestone Flush on the Super Flush instructions. I never do the short instructions. Usually I water flush it (not during winter, i'd leave Anti Freeze in with this) before I use this flush with water extended time frame. I'm telling you so much junk will fall out of your motor you won't know what to think. It works great!I got this because I did a head gasket on a 2.0L DOHC with plugged water port on the head/block in one spot, so you could imagine how Crusty the coolant system looks. I flushed everything but the block already and will use Prestone Flush just like I have before with other cars to make sure it does not replug the system. Up to $1,200 to have a shop do all that, and I don't intend to repair this ever again. So you know, do it right. Flush the system. Better heat transfer, is a hotter heater in winter time, less problems otherwise.
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