K-SealCoolant Leak, 236ml | Multi-use Car Radiator & Head Gasket Repair Sealant

Excellent cure for vehicle coolant leaks. Solved my son’s water pump leak when I doubted it could possibly do the job. Still going strong months later!Great price on Amazon.

Dont thejob

I purchased this product due to a situation where my car was experiencing water leakage from the water pump, leading to overheating. This issue even caused a breakdown on the motorway during a trip from London to Wales. Unfortunately, at the time, most of the local garages were closed for the summer, leaving me with limited options for a quick solution. I had previously used Radwell products, which had worked on two occasions, but this time, it didn't resolve the issue.Regarding the product I'm reviewing, it did eventually arrive, although it took longer than expected. This delayed delivery is the reason I haven't given it a 5-star rating. However, I must emphasize that the product itself performed effectively. Surprisingly, I didn't need to use the entire bottle; half of it was sufficient to address the water leakage issue. I'm currently in the process of purchasing a new car, so my primary goal was to prevent further leaks long enough to visit some dealerships.In summary, if you're facing a situation where your car is leaking, I would recommend trying this product, as it proved to be effective for me.

Writing from the UK, in December 2022Toyota Auris, 2.0D4D, 2008, 85,000 miles.Had developed a quite significant coolant leak from around the waterpump pulley area - enough to have to top up entire tank weekly. No noise however.With the engine running, I could see droplets of coolant being thrown out from behind the pulley (using a good torch).Tried the K-Seal - according to the instructions - which for me was half this little bottle.After just one drive (30 miles) - the leak had definitely stopped!Now my only concern is - obviously a chemical treatment can't fix a worn bearing (if it is - as opposed to merely a worn seal) - but I'm expecting it to make at least some noise before it's about to do anything catastrophic.A new pump from Toyota was surprisingly cheap (c.£150) - so I will change it out soon.But - where all I have is a worn seal - then this stuff really will buy you thousands of miles, if not tens of.And heck - with it circulating throughout the entire rest of the system - it is also preventive maintenence for any other types of leaks (say heater core).

If you use this product PROPERLY it will work for you. Many of the horror stories you hear about this product if you do a little searching is quite frankly due to the total ineptitude and foolishness of the user.You see this product is fundamentally aimed primarily a vehicles with LARGE engines. You absolutely MUST find out what volume of water your engine uses and then use ONLY the recommended amount of the product to suit! - even if it seems tOo small an amount - you must be accurate AND follow the instructions.If you have a standard MEDIUM engined UK car and you dump the whole lot into your cooling system you are asking for trouble! Use the right amount and if your engines issue is still in the minor stages; you will see good results.Here's my particular situation.Nissan xtrail - petrol - when left standing for a few days upon starting would misfire and hesitate for about 10-20 seconds and then work fine. This is indicative of the head gasket on it's way out gradually weeping coolant into the piston chamber.When you start the car the plug is soaked with water - can't spark and you will get a misfire. As the other piston chambers are fine they get things moving - the water is eventually eliminated out of the exhaust port and the plug dries up sparks and then things carry on as normal.This was confirmed with low water in the radiator and header tank and using an inspection camera down the plug hole to confirm presence of coolant.Got new coolant - added the REQUIRED amount of the product - applied as directed and went for a drive as recommended.RESULT? - No more issues. Coolant levels no longer drop in the header tank and expensive repairs have been offset for a future time (if at all) - as this car has done 150K if I can avoid needing the head gasket being fixed before the vehicle becomes no longer worth running then I have saved a LOT of money.