What is the longest time……

What is the longest time a diesel has set that you have tried to start?

Yesterday I looked at a 1984 300D that is somewhat of a flip of a coin as to whether make it a parts car or bring her back to life. The car has some rust and for a W123 I figure make it a parts car, however, I consider the body good enough that if it were a W115 it would be considered a good find. The car has sat since August of 2003 (300,000miles). The car was parked because the glow plugs were out and the owners decided not to bother with the car. Now the wife wants it gone. The brake pads are rusted to the rotors. I did not try to start it, but I might make an offer latter today.

P.S. It hs 100,000 miles on an Amco transmission rebuild.