Blown Head Gasket Fix Repair Sealer for 4 Cylinder Engines

I had a check engine light on with ABS light. Did the usual fixes - changed the fuel cap, reset the codes, etc. As the car was 100k plus miles, so replaced the spark plug. After a while the check engine light came back. The code check was P0304 - cylinder 4 misfire. It was a head gasket leak - bubbles in radiator and smell gas in coolant. Got the hydrocarbon tester from OReily's and it confirmed. I checked the engine oil cap but it didn't have any residue. I also removed a little engine oil to check if coolant had gone into engine. I didn't find any major trace of coolant. However, the coolant was going down and I had to fill up coolant once a week. This is when I decided to try the head gasket sealer. I removed the thermostat, filled the radiator with normal water. Followed the instructions mentioned in the pack. Once I added the sealer, kept engine running for 30mins. After this, I drove the vehicle for 15 - 20 mins on free way at 3000rpm. Left it to cool overnight. I had reset the engine codes and drove the car around. The check engine lights didn't come on. I have been driving the car for more than 3 months now. I had no issues with this - no check engine light, no gas smell in radiator / hydrocarbons. I can only upload one video, hence can't show the video where there are no bubbles.

Worked for about two hours. Initial start up and drove for a couple of hours and didn’t leak. Second drive about two days after and started leaking antifreeze again. Not a big leak to begin with. A pinhole leak on cylinder head. Used two bottles. Used two bottles on a 4 cylinder, 1800 cc engine.

It's been a week now (500+ miles tested) since I've done the treatment on a 1.8L Toyota Prius that had codes for misfire cylinder on all 4 cylinders and I can honestly say it works but I followed these exact steps: Step 1: Cooldown It takes a car 4 to 8 hours for an engine to cool down but it will only cool down to the ambient room temperature, so I had to wait overnight for my car to fully cool down (I'm doing this in summer). Step 2: Drain & Refill Radiator I drained the entire radiator from the bottom, than pour small pot of hot water through the radiator reservoir to help clean out any previous antifreeze remnants. Closed it up, poured 1 gallon of tap water, than half bottle of Steel Seal, than more water and topped it off with the rest of the Steal Seal. Step 3: Drive 10+ minutes with 3500-4000 RPM I drove my car to the highway and then went about 7 miles and then made a u-turn to the next exit and went back on the highway. I did about 20 miles with 14 of it being highway miles. I made sure that I DID NOT turn on the AC/Heater during this trip because I heard about this stuff getting stuck in people's heater core, so I just avoid turning on my air. Step 3B: (OPTIONAL) Clearing Air Pockets I wanted to clear all the air pockets in my radiator so when the car was turned off, I briefly open the reservoir radiator cap (while it was warm) just for all the bubbles to push up and then closed right away before it could spill out. This will damage the reservoir cap so you will need to replace it eventually if it's not damaged at the moment. Which you're supposed to replace when you're doing this Steal Seal treatment anyways. Step 4: ENGINE COOLDOWN Now that the steel seal is all over the cracks, it needs to cool down for it to cure so I waited overnight for the car to go to a complete cool down before driving her the next morning. It's been a week now and I've been driving her normally, and so far🤞 there has been no check engine light, nor any rattling on the engine. If anything changes, I'll come back to this review 😅

This product is a life saver. I know we blew the head gasket on my 2010 Toyota corolla. I could not drive over 200 yards without overheating and all my idiot lights were going off. I had a lot of steam coming out of the tailpipe. I pulled the plugs and saw antifreeze in the cylinders. I got the product as a last resort. After using it, the car is running like new. Thank you so much!!!

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.

Thank you for your attention. Unfortunately. treatment to my car was unsuccessful. I used as directed. I took in to be checked This product did not help me

J'ai reçu vite le produit en bonne état, J'ai pas encore utilisé

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

It didn’t work

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

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.