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blageo23 · 11-09-2006

We just got a thing is school about this. The black is the same as the red, They are both high temp but the black is O2 sensor safe. Apparently the red is not. Also they blue and grey have different heat ratings. Id stick to either red or black. And also the different colors have to do with manufactures specs and stuff like that.

11-09-2006	#3
blageo23 AWD4G64 Join Date: Jun 2004 Location: Shoreview, MN Posts: 2,286	Re: RTV trivia We just got a thing is school about this. The black is the same as the red, They are both high temp but the black is O2 sensor safe. Apparently the red is not. Also they blue and grey have different heat ratings. Id stick to either red or black. And also the different colors have to do with manufactures specs and stuff like that.