I do not consider 1016 miles a short distance. Filled to the top every time. Even if it was only filled to the top at the first and last fill, the data would still be valid for the trip.

__________________
Greg
2012 S350 BlueTEC 4Matic
2007 ML 320 CDI
2007 Leisure Travel Serenity
2006 Sprinter 432k
2005 E320 CDI
1998 SLK230 (teal)
1998 SLK230 (silver)
1996 E300D 99k, 30k on WVO
Previous:
1983 240D, on WVO
1982 300D, on WVO
1983 300CD, on WVO
1986 300SDL 237k, 25k on WVO (Deerslayer)
1991 350SDL 249k, 56k on WVO - Retired to a car spa in Phoenix
1983 380 SEC w/603 diesel, 8k on WVO
1996 E300D 351k, 177k on WVO

There will be sloshing in the tank, and also there are vent tubes.

in real world driving does a 100% to the brim of the filler neck very high point above the tank lead to any leakage when the accelerations, braking, cornering, and normal sloshing are factored in?


It would be interesting to do a test for about 5 to 10 tankfuls when always just stopping the fuel tanking operation to mitigate that issue some with a slosh air pocket and then comparing those results to those from a road trip of constant fill to the brim refueling.

I would bet that the result, if any difference, would be withing the margin of error for winter/summer fuel, road conditions, temperature, ect. But it would be revealing if the result was an improvement. Then it would require further research to eliminate other variables.

No, I meant the individual distances were short....in each case, influence of variables will be greater.

__________________
14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 157k miles
06 E320 CDI "Rutherford", Black on Tan, 175k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 144k mi, wastegate conversion, ALDA delete

19 Honda CR-V EX 70k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife

Do you have a 603 pump on your '98? I'm curious what kind of power you're putting down.

__________________
Only diesels in this driveway.
2005 E320 CDI 243k Black/Black
2008 Chevy 3500HD Duramax 340k
2004 Chevy 2500HD Duramax 220k

Evan, but the big question is what engine code/message is hidden on your display?

__________________
1999 E300 Turbodiesel 169,000 miles
1986 Porsche 944Turbo 20124 miles
1948 Dodge Deluxe 4 door 66521 miles

Good eye. Evan, we're going to have to put an asterisk by your mileage record!

__________________
14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 157k miles
06 E320 CDI "Rutherford", Black on Tan, 175k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 144k mi, wastegate conversion, ALDA delete

19 Honda CR-V EX 70k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife

License plate lamp is out... Mileage will be artificially higher because the alternator isn't powering that 5 watt lamp.

__________________
-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250

I put zilch stock in his numbers. His mpg will always fall between the EPA's published numbers. The quoted numbers he listed above are not the complete EPA statement available. Those are the headliner numbers. His model may be so aged that perhaps they weren't publishing for that model at the time his car was built. Or, he's completely unaware of this.

The numbers he's quoting are outliers or exaggerated. As reflected in the short gallon numbers, or perhaps his calculation method or car's odometer isn't calibrated.

The EPA changed how their stated mpg numbers are calculated at least once over the years.

__________________
'06 E320 CDI
'17 Corvette Stingray Vert

That's a fact. When the guy from AZ started claiming his W210 turbodiesel got over 48 mpg here on a 2-gallon fill - well, you know what his claim was.

__________________
'06 E320 CDI
'17 Corvette Stingray Vert

No, still the electric pump...

I'm curious what kind of power I'm putting down too but not $75 curious it would take to dyno the car. Maybe some time if I have a little extra cash.

Here's a shot of the gauges when I stopped to fill it up this evening. I did the math and regretfully, the numbers are not as impressive as they would seem to be based on the fuel gauge.

__________________
-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250

What a relief, you replaced the license plate bulb.

__________________
1999 E300 Turbodiesel 169,000 miles
1986 Porsche 944Turbo 20124 miles
1948 Dodge Deluxe 4 door 66521 miles

Did I miss it? What's the final mpg number?

__________________
14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 157k miles
06 E320 CDI "Rutherford", Black on Tan, 175k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 144k mi, wastegate conversion, ALDA delete

19 Honda CR-V EX 70k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife

Based on the chart, it looks to me like 1157 miles, and 29.68 gallons used (not including the initial 6.082 gallons which I assume were for the before-trip fuel up) = 38.96 mpg, which would be incredible mileage.

If the initial 6.082 gallons were actually part of the trip, then the MPG is 32.33, which would seem to be more in the expected range.

Steve.

__________________
'93 190E/D 2.5 Turbodiesel 5-speed (daily driver)
'87 190D 2.5 Turbo rustbucket - parts car
'84 Dodge Rampage diesel - Land Speed Record Holder
'13 Ram 2500 Diesel
'05 Toyota 4Runner

What I don't quite understand is why the OP stopped and filled up so often.

__________________
'93 190E/D 2.5 Turbodiesel 5-speed (daily driver)
'87 190D 2.5 Turbo rustbucket - parts car
'84 Dodge Rampage diesel - Land Speed Record Holder
'13 Ram 2500 Diesel
'05 Toyota 4Runner

That's not KarTek's chart....that was from GregMN.

__________________
14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 157k miles
06 E320 CDI "Rutherford", Black on Tan, 175k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 144k mi, wastegate conversion, ALDA delete

19 Honda CR-V EX 70k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife