Steel Seal Blown Head Gasket Fix Repair Sealer for 4 Cylinder Engines

Only had it in a week and so far do good.

Did not work. Waste of money and no refund given or response to my contact for advice and refund as stated on bottle

Car was struggling, coolant being pressurised and car overheating. Used this not expecting too much, but car has been fine for nearly six months! Not really pushed it too hard, but for my day to day commute has been fine since use, even when stuck in traffic.

Well worth a try before replacing head gashet

Not really, didn't work like I thought it would

Worked first time last year, but didn't this year

I used 2 bottles. Others have had success but not me.. Maybe my head gasket is too far gone

Never worked not as good as it states on the bottle.guarantee or money bk still waiting

Works as designed. Saved us a new motor

I wish I could give it a million stars! I had a small head gasket leak. No oil on the dip stick purely a combustion leak. Removed the spark plug from the bad cylinder. I drained all the coolant and flushed it. Added distilled water and this magic in a bottle, and ran for 45 mins. I left it over night. Replaced the plug and ran it 45 more minutes and let cool. It's been 500 miles now and it works! No more coolant bubbling, no more over heating, no more loss of fluids. No it didn't block the heater core. I hope it holds 🤞🏻 for now I couldn't recommend this product enough. Amazing!

The bottom line for this stuff is that it might work or it might not. The ONLY right way to fix a leaking head gasket is to replace the gasket and possibly resurface the cylinder head if it is warped. Yes, this can be very expensive if done at a independent shop or dealer but if you are able, do the job yourself and save a lot of cash. I am doing the job myself for less than $400 including a new timing chain kit, head resurfacing, hoses, thermostat and a radiator. This "magic green stuff" not only didn't work, it clogged the cooling system on my 2004 Honda Element. Steel Seal support says it doesn't do that but I could see down into my radiator from the cap that channels were clogged. My engine nearly overheated during a short test drive after the treatment. Heed the warnings here and in the other negative reviews. You are rolling the dice with this stuff: might work, might not. Might clog your cooling system. You have been warned. On a positive note, Steel Seal was responsive to questions and did ultimately refund my money. Just be nice to them and you will get responses.

It didn't work and should be able to get your money back.

Coolant was seeping into my cylinders overnight which was causing misfires and check engine lights the morning after. I believe I caught the early stage of gasket failure and coolant reservoir maintained level after using this product. Tip: the instruction said to run highway speeds maintaining 4000rpm, which is not feasible. This can be achieved driving around your neighborhood in low gear and your speed will be slower to 30km/h.