.Spots and locates combustion leaks quickly in cracked
or warped heads,leaky gaskets or cracked block.
Use Leak-Check in the radiator opening with engine
iding .The blue test liquid will turm into yellow in 60
seconds if there is a combustion leak,no matter how
small.Get exact location of leak by disconnecting one
spark plug at a time and retest.
Completely accurate proof of leak.