Drove from Atlanta GA to St George Island FL in MONSOON weather. I must have been doing 45-50mph. I thought my ODO must surely be off but my new GPS confirmed it. I got 472 miles on 1 tank!

So maybe all those ebay claims are not false. Maybe everyone drives through hurricane weather every day?

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http://superturbodiesel.com/images/sig.04.10.jpg
1995 E420 Schwarz
1995 E300 Weiss
#1987 300D Sturmmachine
#1991 300D Nearly Perfect
#1994 E320 Cabriolet
#1995 E320 Touring
#1985 300D Sedan
OBK #42

I got that mileage in my SD a few weeks ago doing several 70 mile trips at around 45-50 mph.....I held constant throttle rather than constant speed. My MPG was about 33.7 or so.....over the course of just over 300 miles.

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-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)

soooo in my 240D five speed, I should average what? 60MPG at 50MPH?

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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 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

I've gotten over 30 as well, just by driving carefully. Adding diesel kleen cetane booster helps a lot to get close or over 30 consistently too...although that would be considered "cheating" by strict standards. Cost of mileage difference usually makes up for the price of the additive though.

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TC
Current stable:
- 2004 Mazda RALLYWANKEL
- 2007 Saturn sky redline
- 2004 Explorer...under surgery.

Past: 135i, GTI, 300E, 300SD, 300SD, Stealth

Winmutt,
I assume this is in the '85? Are you running the factory 2.88 diff? What is your engine rpm at 50mph? It sounds like whatever the rpm range you were operating in is optimal, plus you probably had the added advantage of cooler, denser air from the storms you were driving through.

I am starting to creep up to the 30's after changing out my rear tire and when the climate started to cool off, last time i only got 22-25 mpg. the previous tire was on at least more than 5 years and its stale, bald and looses lots of air.

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Current Garage
2008 Mercedes GL320 CDI 188k mi Repair/Work in progress
1994 S350 160k mi Garage Queen & prepping for repairs
2005 E320 CDI 203k mi Healthy & Daily Driver
1994 S350 357k mi Retried as parts car
1984 300TD 214k mi Blown OM617 Poss OM603 Swap??

Sold
1987 300SDL 200K+
1994 S320 181K mi
2008 E320 Bluetec 127k mi
1999 S420 130K mi
1980 240D 360k mi
15+ Others that has come, stay and gone

GONE, BUT NOT FORGOTTEN
1995 E320 SE 220k mi
1984 300SD 350k mi

Yes the 85 with 2.88 diff. Tach has been dead since I forgot to swap the sensor over when I swapped engines. Most of the time I was just coasting as it was pretty much a continuous hydroplane. Maybe hydroplaning decreases friction?

__________________
http://superturbodiesel.com/images/sig.04.10.jpg
1995 E420 Schwarz
1995 E300 Weiss
#1987 300D Sturmmachine
#1991 300D Nearly Perfect
#1994 E320 Cabriolet
#1995 E320 Touring
#1985 300D Sedan
OBK #42

I suspect I was driving in that same storm (Sarasota -> Atlanta) and got my best mileage to date in the 84 300D (32+ MPG). Something magical in the air, perhaps.

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84 300D 255K "Mr B" ("Mr Becker")
79 300D 265K "Mrs B"
85 300TD 175K "Mali" (Sold)
74 Ford F-100 74K "Bonnie" (Sold)
67 Jeepster Commando (Sold)

cold water filled air? no A/C?

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1982 300CD Turbo (Otis, "ups & downs") parts for sale
2003 TJ with Hemi (to go anywhere, quickly) sold
2001 Excursion Powerstroke (to go dependably)
1970 Mustang 428SCJ (to go fast)
1962 Corvette LS1 (to go in style)
2001 Schwinn Grape Krate 10spd (if all else fails)

Today back one pure diesel.131 miles,4 gals.

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1999 w140, quit voting to old, and to old to fight, a god damned veteran

Best I ever got was 41 mpg over about a 70 mile trip. Back roads, averaged about 50mph. '95 w124.