Gyaniji your Gyan is suspect. Wah-e-Guru simply means 'Wow, what a guru!" Besides, you seem to think that what I am saying is not in the Sri Guru Granth Sahib Ji. Read it again. What I am saying here is there on every page. Yes, and I will repeat it in capitals. ON EVERY PAGE.
Reference:: Sikh Philosophy Network http://www.sikhphilosophy.net/sikh-sikhi-sikhism/27483-is-wah-e-guru-name-god.html
Reference:: Sikh Philosophy Network http://www.sikhphilosophy.net/showthread.php?t=27483

If there exists an obscure mention of Wah-e-Guru in the Sri Guru Granth Sahib Ji, be sure its not one of those fancy American-Sikh translations. Even if it occurs in the original Gurbani, I am sure it does not have the exalted mean it now carries. Wah-e-Guru is not the name of the Supreme. And as such, it has absolutely no spiritual cleansing properties as the real Naam of the Supreme carries.

Arguing with me on this issue is pointless, for this is not my statement. This is what the good book says.