That page is pretty funny. Creative guys. At least it shows what crap can be floating around in there. The Tefba will be OK but it's not optimal. When I cut my filters open I see all kinds of stuff that'd easily get by it. I don't think it has any sort of bypass either ie; when it plugs you'll lose flow. It just depends how anal you want to be. Myself, I'm a stickler for good filtration anywhere I can do it, especially on auto trannys and power steering systems.
I use a Donaldson coolant filter without SCAs (supplemental cooling additives) installed in the TB coolant loop. Mounted where my igniter used to be. It's big rig stuff but only a little bigger than a normal oil filter. I get 'em cheap from fleetfilter.com or filterbarn.com, I forget which because I buy various filters from both places. NAPA will be more than happy to rip you off for the WIX at something like $15 a pop. The number is 4070.
The "problem" with real coolant filters is they have an odd stud size. That means a matching filter mount is needed. You can get one cheap from a marine supply store because fuel filters used for boats have the same stud. Ebay has them for peanuts too.
That said you can also use a cheap Permacool oil filter mount and a plain old oil filter. Use a "tight" one like a Purolator PureOne if it makes you feel better. Or use the Tefba and forget you read this
