K&W 401232 Permanent Head Gasket & Block Repair with Nanotechnology - 32 Fl Oz

My bmw x5 2001 blows out a thick white smoke for few minutes every morning after it got started. it gives all kind of engine lights....My mechanic told me that that the head gasket went bad and leaked the water from radiator into engine block and so creates a white smoke when the engine got started from cold. There are work arounds to fix this issue if i dont want to replace the gasket seal which costs 2000-3000.00 at least1. Treat it with engine smoke reducer which i tried but it worked only 1 day or twoor2. Content to deal with status quo that let the engine runs until the white smoke stops , reset engine codes and keep filling the losing coolant every two or three daysi have no choice but deal with option 2 as option 1 did not work. However, i was getting tired of it and thinking about donate it to charity. But before doing so i tried to google for the last trick to fix this issue and found this product and some other similar ones. I ordered this product although i was still skeptical about it. i Iollowed the instruction which used only 1/3 of the can poured into the radiator while the engine was running. Then after few minutes I closed the radiator cap and let the engine run idly for 15 more minutes then i turned the engine off. Next morning i came out and started the engine and to my delight: no more smoke, no engine light!!!! it has been a week now and it still works like a champ!!! i dont know how long this trick works but if it does not fix permanently and requires me to redo it every month or so, i am still very happy about this product as it a cheap altenative than spending few thousand dollars to replace the gasket seal.

I have a 2000 Jaguar XJR with 140,000 miles; the head gasket blew, with all the typical signs: coolant loss, white smoke with a sweet smell coming from the right exhaust, and soon after from the left exhaust. Several mechanics recommended an engine swap, which would cost $3,500+.Since I was out of an engine anyways, I decided to give one of those good old head gasket miracle fix products a shot. I found a video on youtube of a mechanic who recommended this product, but with a different, prolonged approach; instead of only leaving the product for a half hour or so, he recommended leaving it for many days and running in for hundreds of miles until the leak was sealed. I decided to give that a try.I followed the instructions: coolant flush, then pour in the water with the product, let it run for a bit. But instead of doing another flush, I left the water with the product overnight with the coolant cap off, then ran the car for 20-30 mins everyday for a week.The day after, the white smoke (vapor) was almost the same. On the 2nd day, there was much less smoke. 3rd day, even less. By the 6 or 7th day and about 100 miles of driving, the smoke had disappeared.I did the flush to eliminate the product and replaced it with coolant. Also changed the oil. It has been 6 weeks, and the Jag is running PERFECTLY. No coolant loss whatsoever, no smoke, smooth running; the product worked amazingly well so far.I will update this with any changes in the next few months.

I tried to use this product to fix a head gasket leak on my 2002 Dodge Caravan. I followed the manufacturer's instruction to the letter. That is; removed the thermostat and flushed the engine to completely remove all coolant from the system. I flushed the heck out of it too. Like five complete refills, starts and drains to ensure there was no coolant. I even had a new radiator installed prior too using the product.Now to be fair after this did not work I ended up trying K-Seal as well, which also did not work - although I did get some results using the K-Seal product. At this point I am rebuilding the upper half of the engine.So, I can't say 100% for sure that this product does not work, it just did not work for me. I don't know that anything would have. But if I had to do it again, I'd use the K-Seal to avoid having to flush the entire system. Although, if it's an old car and it's suffering from a semi-clogged radiator, you could be asking for trouble using any of these type products.I will also add having worked on cars my entire life, regardless of which product you use, these are not "permanent" repairs. I fully expected to have to change the head gasket at some point when the weather got better. So if you are buying this thinking you'll be good to go forever, you are kidding yourself. Just sayin.