Well,
I just got back from taking my 1980 300D on a 1700 mile road trip!
I took my family from Fort Worth Texas to Knoxville Tennessee and back.
Except for not having A/C, the trip was wonderful! The car drove so smooth and straight with no noise, shakes or rattles.
I averaged 25 mpg, and did not burn any oil. She ran at 95 degrees constant.
This car just drove and drove. I kept the speed right about 65 mph in the 70 mph zones, unless I needed to pass, then I had power to pass. The car slowed on some of the mountain inclines, but for the most part had plenty of power. I would not hesitate to drive this car anywhere, but it sure was hot! Anyway I just had to let everyone know,
Robert Frick

Way !!

Sounds like my trip from DFW back home at the beginning of the month (also going to San Antonio and L.A.). Even ran at about the same temp (although my a/c's kinda working).

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2001 VW Jetta TDI, 5 speed, daily driver
1991 Ford F-350, work in progress
1984 Ford F-250 4x4, 6.9l turbo diesel, 5 speed manual
Previous oilburners: 1980 IH Scout, 1984 E-350, 1985 M-B 300D, 1979 M-B 300SD, 1983 M-B 300D
Spark-free since 1999

We had recently driven from here in NJ to Walt Disney World in our TD. Round trip it worked out to about 2200 miles. Averaged 65-70 mph, A/C all the time, temp stayed at 90c, averaged 28 mpg. Not too shabby for a 19 year old car weighing about 4200 lbs.(car, family and luggage).

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1999 MB SL500 (110,000 mi)
2004 Volvo V70 2.5T (220,000 mi)
2014 Tesla Model S 85 (136,000 mi)
MBCA member

Will be heading to PA soon and expect to turn about 1700 miles on the clock as we'll be taking in Ocean City, NJ as well. Just put new wheel bearings in the front to get her ready.

Don

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DAILY DRIVERS:
'84 300DT 298k (Aubrey's)
'99.5 Jetta TDI IV 251k (Julie's)
'97 Jetta TDI 127k (Amber's)
'97 Jetta TDI 186k (Matt's)
'96 Passat TDI 237k (Don's
'84 300D 211k Mint (Arne- Undergoing Greasecar Conversion)

SOLD:
'82 240D 229k (Matt's - Converted-300DT w/ 4 speed