Reply To: Coolant water loss

Hi Bernie,
It’s more useful if I go through the whole Thermocure treatment, so forgive me if I sometimes ” state the bl***ing obvious ” (to quote Fawlty Towers )

1. Got 2 x 1 Litre bottles of Thermocure from Frosts Restoration. I had to get 2 litres as otherwise the concentration of the Thermocure/water would be slightly less than required. The total cost was approx £60 but as things turned out, was worth it.
2. Drained the radiator and engine block – then closed taps (obviously!)
3. Poured in One and a half litres of neat Thermocure. As the liquid went down I could hear a light -glug, glug- as though the air wasn’t able to be pushed out of some of the rad tubes because they were blocked at the bottom so the air had to be expelled from the top of the tubes(?). Topped up the system with water
4. Took the car out for a run on a very hot day. An immediate result! Water/Thermocure mix showing lower running temperature. Stopped to unclip the radiator cap several times. Looking good – foaming in the header tank but coolant liquid still there under the foam, no bubbling of the coolant.
5.Took the car out on several days – same result.
6. Decided to drain/flush the system when it was warm. All that came out was rusty liquid, no muck or flakes of debris. Flushed the system with a hosepipe in the header tank several times. I didn’t remove the bottom hose or take the radiator out, instead relying on the rad and engine block taps to drain the flushing water. So it is possible that there was muck in the bottom of the rad and engine block. I think that unlikely, as the flushing water flowed freely from both taps, with or without the hosepipe being turned on.
7. Filled the cooling system with water (antifreeze can wait until the autumn) and away we go!
That’s my experience. The solution to my overheating was so simple – I still think it a miracle!!! So, for the sake of £60 approx I recommend others with this problem to try Thermocure first. It may be my rad and block were not too bad, but then there was overheating – now cured- and the -glug, glug I heard did indicate some blocked tubes
Thank you for reading this far. This is my experience of this product. I went into this amount of detail as I want my experience to be as useful as possible to other Big Six/Traction Owners.
Feel free to contact me if I haven’t made anything clear.
Regards
Bob