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COLVERT · 2nd May 2019, 20:58

I think this is true. (Somebody correct me if I'm wrong. )

There is a chemical that can be put into the header tank. Harmless to the engine. Using ultra violet light even the very smallest traces of leakage can be seen.. Things the naked eye can't detect. ( I think.

---Lol. )

2nd May 2019, 20:58	#8
COLVERT This is my second home R75 Saloon. Join Date: Feb 2009 Location: France/or Devon. Posts: 14,003 Thanks: 3,851 Thanked 2,167 Times in 1,816 Posts	I think this is true. (Somebody correct me if I'm wrong. ) There is a chemical that can be put into the header tank. Harmless to the engine. Using ultra violet light even the very smallest traces of leakage can be seen.. Things the naked eye can't detect. ( I think. ---Lol. )