Try something called Castrol "Super Clean". Comes in a 1 gallon purple container. You can find it at most automotive stores including Pep Boys. Be advised, this stuff is tuff. Wet down the area, spray some of this stuff on, let it sit for a few - but don't let it dry, it leaves marks if you do. Then rinse it off. Sure works good, twice as strong as simple green. I like to spray the undercarriage down with a little WD-40 afterwards to top it off - works good.
Criag
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2000, 2500,QC,4x4,white,tow,leather,6 spd,4. 10, 4" exhaust - turbo back, K&N, Balls of steel hitch, line-x bedliner, Autometer Ultralite pyro and boost, Mag Hytec on Dana 80... wouldn't dare add anything to void that good ole DC warranty!
[This message has been edited by cjohnson (edited 03-12-2001). ]