Bars1830976 H1S1L-27 Head Gasket 600ml

Work like magic. Worth money. My ford fiesta 2009 model had serious gasket issue and if I replace with new so it cost more than £1000 but this product work very well and resolve issue. But I suggest to read instructions very carefully and also get idea that how to use this type of product by watching videos from YouTube. My issue resolved in just 1 hour. Work very well and leakage absolutely stop. No smoke or no harmful for engine or anything. Cooling capacity is good.

This stuff actually worked..... I done the exhaust gasses test and changed from blue to yellow after few minutes. Done a full flush on all pipes removed thermostat check was working. Simple to use and understand my 13 year old daughter dis the rest. Pour bottle in coolant tank top up coolant to above max line. Close coolant lid. Start car put heaters on max. Left running for max 30 minutes. Checked topped up fluid again. Disnt over heat like would before thought i try it as garage said 1484.73 to do head and cam belt. Car not worth it.Let cool down. Took for a run after 7 weeks off the road. Temp gauge stayed half way all the time stop in traffic 20 min no movement on gauge or tablet temperature whilst running diagnostic. Had heat back in the car aswel apart from to hot out side to keep on but nice to know its working again. Done the exhaust gas test again 15 mins and still blue not a change in colour..... Will update in few months how its going today date 16/7/23 total time 4 hours 35 mins. Before 30 min max before it would start to climb on temperature gauge. Amazing stuff....

Not only did it not work, it completely clogged my heater core!! I have a pressurized system. It didn't solve any symptoms at all! For the price, I expected some result regardless of how small! I certainly wasn't expecting it to destroy my heater core 🙄

I'm not quite sure my car needed this, but maybe it did .Read instructions and I only needed half bottle, syphoned off that amount from cooling system and poured in, ran car engine plus heating/air conditioning 15 minutes, done. I figured if my car did not need it, it still was a good precaution

Was sceptical but this kept my car going for a good 8 months. I knew the head gasket was going but couldn't justify replacing as was more than the car was worth. Bought this a few times and really helped until she finally went to the scrap yard.

Do these chemicals work, Dont buy them .

OK I'm tempting fate here and I'm crossing my fingers and toes, but this seems to have cured what I'm pretty sure was the start of a leaky head gasket. Given that it's an old car, this would have been the kiss of death, as the cost of replacing the gasket would have been prohibitive.I had a misfire on startup that cleared after a couple of minutes, and the engine management light came on and stayed on. I was also losing some coolant, though there was no discolouration of the engine oil. After using this - following the instructions to the letter - the misfire went away and my garage was able to clear the warning light. I'll keep crossing my fingers but after a couple of months, I have to say this is highly recommended.How well it works will obviously depend on where exactly your head gasket is leaking and how badly, so it won't work for everyone, but it's certainly worth a try.

Used for a slight head gasket fail where a small amount of coolant would seep into one cylinder when engine shut down from hot (making hard to start from cold next day - petrol engine). Worked perfectly and sealed the fault completely. 100's of miles covered since using this sealant and no issues at all. Coolant still flowing great, perfectly clear & no evidence of clumping etc. I started and run engine to temp for 15 mins, shut down, cool, release pressure and repeat over a few hours. Very impressed - would recommend!