I keep a fuel filter for the car in the trunk, so if it clogs when im on the road I won't be stuck; however if the trans-diesel works, i'm going to need a portable filter/pump set-up. I would prefer not to do this as my main setup would be a 55 gal drum with filter and pump, that way while its sitting there between tanks most of the sediment will settle to the bottom. The best thing going for me on this is where I work - I get the fluid from the waste oil of dynoed transmissions, it's as clear coming out of the dyno (which has a filter on the sump pump) as the new fluid going into one about to be tested on the dyno. If it was from a shop that I had no idea what was in it, I would do ALOT more filtering, settling, filtering again and then some.
And to reply to TDI-GUY - Currently I am running a 75% trans 25% diesel mix and there is no smoke at idle, just a hint of a whiteish smoke upon full throttle take off - before there was quite a bit of black coming out the pipe. The thing runs like a champ for 326,000 miles.