the 85 with the 2.88 rear ratio and the slightly more advanced cam profile/fuel map in a sedan is capable of 30, but it requires extreme driving conservation. more likely is 25-28 if you have a wagon, (as your TD notes) then it's less likely to reach 30 due to weight and aerodynamics... what makes you think you have LSD? how far off and in which direction is your speedo/odo to reality?

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 560SL convertible
1987 190D 2.5-5SPEED!!!

1987 300TD
2005 Dodge Sprinter 2500 158"WB
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!