I was blaming the supercharger initially, and decided I would remove the twin 10" fans and shroud that I have had on the car since day one that has worked perfect and put a single big BF fan and shroud on it.
In the process of removing radiator hoses etc to fit it, I found this in the top of my radiator.
![Image](https://s20.postimg.cc/xupc32kj1/IMG_20160430_093145.jpg)
This is a 3k KM engine which was perfectly clean before I put this crap in the radiator to seal the head stud leak.
It definitely fixed the stud leak, but it is also trying to seal every other hole in the cooling system.
So I would suggest NEVER using this stuff, but if you must use it, drop your coolant and replace it as soon as it seals your leak.
Hopefully I can just remove the radiator and flush it backwards and most of this will come out.
I will do a complete flush of the engine too.