2 x Engine Revive Hyper-Seal Head Gasket Repair Fix/Additive 236ml

Had my doubts as to if this sort of treatment really works or at least for longer than 5 minutes, well whilst waiting for a replacement engine I though I'd give it a go. Followed the instructions and crossed my fingers. It did not appear to work straightaway and there was obviously still a leak a water level dropped, topped up the coolant a couple of times and then touch wood had no more loss of coolant and it's been about a month now and about 1000 miles and level still good and the temperature indicator stays at half way. If this continues for another 5/6,000 miles then I will consider it was a success and money well spent.

Bought 2 bottles flushed system ,made sure water was circulating ok ,let the engine cool over night, added 1 bottle ,leaving the engine on 2000 rpm fast tickover for 10 minuets like instructions state ,took car for slow drive too have it over heat ,and boil ,got home waited for engine to cool ,took thermostat out , topped up coolant ,again ,slow drive ,to have it boil up again ,once cool added other bottle to coolant ,left on fast tickover to have the engine boil up again,Did not work for me

Didn’t work for me, ended up using the second bottle, still didn’t work: waste of money

Worked well for a few months only, then the exact same problem started again, so it's absolutely not permanent solution as they claim on the bottle !!It causes blockage in the heating system as well, be aware if that as a side effect of using such product.Not happy with the result, wouldn't recommend as a permanent repair. 😐