My 300 D has decent power until I hit around 30mph and it tries to shift gears. If I am going up even the slightest little hill it just crawls. I have had this car for a couple of months now but this is definitely the worst it has been. Also, if I am on the interstate it will max out at about 55mph unless I am going downhill(even just a slight downhill grade).

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http://www.libertyagrifuels.com
1984 300D Turbo
1980 300SD Sold
1983 300TD Sold
Dagger 16 ft. Legend Canoe (for the weekends)
Marin Northside Trail Mtn. Bike