Irontite All Weather Seal, Blue, 16 oz

This item came quickly. I flushed another type of sealer out of my heater core that had it clogged I used irontite flush worked great,but then the heater core leaked really bad, put in irontite sealer stopped the leak in 5 minutes and still have heat.... Great product!!!

I am-one of the lucky people who happens to own a truck wiith one of those millions of pairs of cracked heads on vortec engines of certain years.At 100000 miles, I am in no mood to purchase and install new cylinder heads, l heard of this product on one of the automotive shows on Motor Trend tv. Product is high priced, but beats the alternative, as this stuff really worked-no more unexplained low coolant levels. If used , you must drive at higher speeds/rpms right after pour. So far, so good.

I ordered this on a recommendation. 06 Jeep, 200+ miles, not replacing radiator for worn seals. I bought this stuff, introduced it into my system. First 24 hrs, the cooling system puked fluid on the cool down. Needless to say, not hopeful!. Drove it to work with lots of coolant to spare... 4 weeks, not one leak. I have had no issues on cooling system flow. I have used other products without the same results. I can say, the entire 3 step process is going to be applied to my other running vehicles, but, for a fix..... this one product was fantastic. I did seal a leak seal w/in a couple minutes.. the final seal took a couple days of driving. My leaks were the seals between the various plastic/metal parts on the radiator that Chrysler (Mercedes) elected to use. I really believe the engineers need to understand how to work on cars, and actually experience end user issues. (FYI, I was an engineer, build cars in my free time...

My radiator, Worked great😇

This stuff really works.I am very skeptical about additives in general,so when I heard about this product I really didn't expect the results I got.I was hoping this was going to prove me wrong and it did.I had a small antifreeze leak that I couldn't even find the source on my 2002 for taurus.I had changed the water pump about 6 months prior and this small leak kept showing up on the floor of the garage.I power washed the motor and still with mirrors etc. I could not find the source.I was told about this product and it worked.No more leaks and I didn't have to pull the water pump again.Ps. All hoses and clamps were find so it may have been sweating out from one of the bolts that secure the pump,but this did it.

I put this stuff in my car's cooling system as preventative mantinence after a coolant flush. My car then developed a gasket leak. This stuff only seemed to slow the leak down. Use at your own risk.

It may work for certain issues, just unable to tell you at this point

If you have a 💩 ecoboost engine with coolant intrusion, this product will get you out of a bind. I'm 100 miles down so far after using this product. Not permanent but it'll get you to the dealership to trade it in with no engine codes.. Ford should be sued!!!