MY GOD IT ONLY BLOODY WORKS!!!!!!!!!!
Started from absolutely freezing cold this morning (de-icer was freezing onto the windows) first crack of the key, the best she has started ever since I've owned her, ran her up to temp to get the thermostat to open and she ran like a dream.
Once temp was reached, switched her back off and released the pressure build up from the expansion tank cap, tipped in warm water (didnt want cold water to create further damage in a hot engine) and antifreeze 50/50 mix up the the top of the expansion bottle and then bled the air out of the system using the normal bleed screw on the water rail and brought the water level down to the max line.
Went on the 15 mile school run with the kids, car ran perfect all the time checked water level at the school and when I got back and it had dropped about 1mm.
Let the car cool for an hour and water back on max line where it was before setting out and nice and clear blue colour as it should be.
Just been on a 45 mile round trip to my mothers and back and its still running perfect with just a little haze of smoke from the exhaust (nothing unusual for a 122,000 mile k series in freezing weather) and no loss of water whatsoever.
Its even seemed to seal the very slight weep the radiator core had.
The oil seems to even be cleaning itself up and loosing the mayonaise effect (water evaporating off a bit I guess) but I am going to change that either this afternoon or tomorrow as soon as I get chance.
So far I can't say a bad word for Steel Seal, I think its brilliant and am thinking about trying it on my Renault 21 Diesel thats had liner seal issues for ages and seeing if it works on that too.
I will keep updating here over the next few days and so on to let people know how it goes but as I say so far I am absolutely amazed by the result.
All this from what essentially is a bottle of what looks like cats piddle. I just hope its gonna last, the bottle says its a permanant repair which I am guessing is very optimistic but I guess this has to be seen with time.