I have a 1989 W250 4x4 with a 727 trans that has about 100 miles since rebuild that was exposed to that dreaded biodiesel goop that forms when it goes bad! I need to sell it or find someone who can advise me on how to clean up this mess. It has been sitting for 5 years because of this problem. I do not even know what to ask for this truck. It is located in S.E. Arizona in a little town called Patagonia. Any suggestions would be appreciated.