Do those head gasket and cracked block sealers really work?

Question

I have been losing a very small amount of of coolant last comple of days actually since I changed my valve cover gaskets last saturday little bit of smoke comming from engine and the tail pipe(white smoke) does not really have a smell that I can detect but I am a smoker haha I reasearch the internet and everything I read about this {K&W Nanotechnology permanent head gasket & block repair} fluid only can find good things about it nothing to say it has not worked. Any clues it's just a quick fix mybe 2 or 3 months

Answer 1

That stuff REALLY does work. I sealed a 350 Chevy eng that was blowing coolant out the tailpipe faster than I could refill it.

Two years later it was still running fine when I sold/gave the car to my son. He drove it another 3 years and sold it.

Follow the instructions. It's time consuming, but worth it.

For smaller leaks like yours, there is a seal that comes in a glass bottle for about $7. that looks like vomit that also works well. Just recently sealed my daughters truck eng that was leaking at the radiator. (she couldn't afford a $350. radiator)

Answer 2

Ive never had any luck with any of them, and usually they plug up the raidiator and heater core. If it were mine and I couldnt afford a proper fix, I would just check the coolant every time I drove it and keep it topped off untill the condition got worse.

Answer 3

If u want to keep the car i would suggest engine replacement...even if u fixed the heads my experience is that there is no promise that ur lower end wont go....U need to have it pressure tested to see what shape the motor is in 150 to 300dollars. the sealers are a temporary fix....if ur system hasnt been flushed it more than likely clog ur radiator thermostat

Answer 4

had some success with liquid glass but stuff from the shelf at part store is junk, more likely to block water passages and overheat engine, but if your going to keep the vehicle go ahead and get it fixed the right way

Answer 5

I have used J B weld but u really have to take your time and sand it down perfecly to get a good seal yes.

Answer 6

if they seal the leak they might seal the rest of the cooling system and cost you a water pump.

Answer 7

I would not use them or trust them.. they are just gimmicks....