Irontite 3-Pack Cooling System Additives - Thoro-Flush, All Weather Seal, Ceramic Motor Seal - Premium Leak Sealants, Rust & Scale Removers, Preventative Maintenance for Radiators, Head Gaskets & More

I did the whole 3 stage process on a 2004 Subaru XS (EJ25 single cam, non turbo), which was consuming a gallon of water per 100 miles on the interstate at 70mph, far less miles in town. Left the coolant system with the thermostat removed for 2 days for the second step to "cure" because I had the time. It currently consumes less than a few oz in the same period. A very effective bandaid staving off a head gasket for now. The coolant system capacity meant I only used 1/3 the bottles for the treatment, as directed. Highly recommended!!!

I have used these products for many years and they work better than any others I have found so far. The only caution is with the block cleaner... it cleans the whole system if you have an older vehicle use with caution because it may clean out some sludge in the cooling system and you may find a few leaks in your radiator or heater core in older vehicles that don't get regular maintenance. don't get me wrong these are very good products just don't leave the cleaner in too long in older vehicles. These do exactly what they are supposed to and no less..

bought to seal a slow drip soft plug..followed instructions to a T..didn't work

Had an old 2001 F250 Superduty with the 5.4 litre engine and 230K miles leaking antifreeze in to the oil sump causing it to make a rootbeer like appearance. Was about to write the vehicle off though I thought I would give this product a try after seeing it mentioned on a TV show. After trying all 3 products and allowing the system to "air dry" overnight, I am proud to say the seepage is gone and my crankcase is clear. Although I should have used it sooner- (letting it run it its problem condition caused a slight knocking sound in the morning) , I have driven the truck and have no problems. Just follow the directions exactly as listed. I am a believer now!

Seemed to work, but if using in a large vehicle you need to know that each bottle is only for 5 gallon of capacity. And you don' find that out till you have bought it and it comes to you. It's on the bottles

So far, so good. (Hate to say that as I HAVE jinxed jobs before...) But I have to say that this product application in a Ford Expedition was allot LESS work and trouble than I had envisioned. (It does help if you have a vacuum pump and reservoir to dry out the system after the ceramic treatment.) All told I am glad I trusted the advice of an elderly machinist (my father-in-law) that remembers successfully using these products in his machine shop decades ago (like a half century PLUS ago)... I'll see how this vehicle holds up and will follow up with a report in a few months. I had a North Star Cadillac a few years ago that blew head gaskets and overheated because of a design flaw caused by head bolts stretching (original design was for hardened studs and nuts, but GM designers are smarter than the original design engineers) and I am glad I went with the machining and installation of hardened studs in that application. With this Ford Expedition I am much more hopeful. We'll just us see...

Had a leak in the heater core on my F150 that was allowing antifreeze vapors into the cab. Checked for a leak stopper on Amazon and this was rated very high. Went through the process of flushing and sealing by following the directions. Now a cleaner cooling system and no leak.

Product failed to work. I went with another product that worked fine.

I can’t say if it a good product or not, it didn’t work for me. But that doesn’t mean it’s not a good product