Has anyone here installed an auxillary coolant filter on their X? If so, what type and where did you mount it?

Umm can you be more specific, I have no friggin idea what you are talking about:p

Sounds like engine coolant... in which for street vehicles, I've never heard of a filter used on em... could be wrong though

I have seen it done before. All you need is an oil filter relocation kit. You will want to hook it to the coolant return hose. This is usualy the one coming out of the bottom of the heater core.