Thanks, I have already submerged in the agitene.. Agitene is safe for all metals and plastics, and the recommended brush material to be used in agitene is a nylon brush, when metal bristles are not prudent for the part being cleaned.
Yeah, I think you mentioned somewhere that the UIM is nylon.. Seems like a suitable plastic, the melting point of a 6.6 resin nylon is pretty high.. 6.6 nylon is used in household furnace applications, for the AC evaporator drip pan, which of course sits right above the heat exchanger. No rust issues like the old tin drip pans.
1993 Bonneville SE, frame off resto in progress, will be stock except painted black & chrome t-stars, estimated finish date - spring 2009.
Cars in my "fleet": the bonny project, the bonny parts car, 1999 Olds eighty-eight LS anniversary, 2004 chrys T & C.
Husband, father of two daughters, deer hunter and lover of most things GM, (although I do like my Chrysler minivan) - but nothing comes before my girls..
I'd much rather go home after work and be with my family than do anything else..