IRONTITEAll Weather Seal, Blue, 16 oz

Easy to use

A friend recommended this and I used it a couple of years ago in a 5.4 Ford that was blowing white smoke and making the oil milky. I had little hope it would work but I figured I had nothing to lose and it cleaned right up. Right now I've got a 4.6 in a Towncar that has a very small coolant leak somewhere on the passenger side head. I first noticed that it was making a small amount of milkshake under the oil filler cap and then noticed that the rad cap was always wet. So it was definitely pressurizing the rad and slowly losing coolant. Two bottles of Irontite later and - at least for now - the rad cap is dry. Time will tell but this stuff definitely works.

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.

This is a great product

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...