Talk:Coolant Leak/@comment-175.142.72.108-20140927215044/@comment-98.89.8.217-20150419080522

This right here. This mod alone is indeed crap, but it appears to stack with the slows from other abilities - and seems to stack additively, not multiplicitively. This makes it very valuable for use in Snow Globe (paired with the new Chilling Globe aug and Infested Defense becomes a cakewalk) and also for other slows, like Molecular Prime.

Also, apparently the slow effect is a generic slow, and not tied to Cold damage at all, because I've slowed enemies with my Vaykor Marelok with a Cold proc, and then when they got closer they actually slowed down even more (and multiple Cold procs don't stack, but this did.)  Again, makes sense considering it also stacks with Molecular Prime.

So it's not useless. Very, very situational, but not useless. Like any other mod in Warframe, just apply common sense about whether using it is a good idea or not!