wtf is the difference between black, blue etc rtv?

[digger]

rtv is fine, you need less than you think it goes alooong way when it gets squished

[itsonlygeorge]

I use Permatex Anaerobic Gasket Maker 51813 for my water pump. The po used some shit orange rtv that failed in a year.

http://asaptec.com/blog/wp-content/uploads/2012/08/GasketMakerSelector-1024x654.png

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[7pilot]

I tend to find that blue RTV is a prevalent infestation of the residents of salvage yards.

I Use grey or Ford RTV for O2 sensor safe sealing, and permatex high temp for post cat exhaust sealing.

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