The only accurate way to check you miles per gallon is to start with a full tank, run a certain distance, refill the tank, and divide the miles traveled by the gallons consummed. If you start with 3/4 of a tank, and end with 1/4, an innaccurate fuel guage can change the numbers drastically. My GMC duramax can go 68 miles before the guage moves off of the full mark. The tank holds 4 gallons past full. Can never use the guage to get accurate calculations but it is usefull for estimates.
--- In diesel_mercedes@yahoogroups.com, "williamc" <wmcowart@...> wrote:
>
> Now I an astounded. Let me explain. I have a brother that live 50 miles north of me, in the hill, a bit over a one hundred mile round trip. We have had this car a bit over 3 years, but I only rarely drive it, as it is mostly driven by my wife. Recently I drove it up there. When I left it had 3/4 of a tank of fuel. I used only 1/8 of a tank on that trip. Then I went back up there, back to Idabel, then back up to his place , and returned home, 6 mile out of Haworth, Okla. A trip a bit over 200 miles. When I left it had a hair under 1/2 a tank, when I got back home, the neede was a hair above 1/4 tank.
> With a 21.1 gallon tank that would be near 36 mpg . if the mpg was 28 mpg, it would be approximately a 28 gallon tank, is that possible ?
> I made this trip running at 2600 to 2700 rpm, at 55 to 57 mph ; using B 100 fuel, home brew. i suspect the IP is just a touch late, valves recently adjusted, as thosetwo items would definately increase or decrease fuel milage. Any opinions. Bill C
>
> --- In diesel_mercedes@yahoogroups.com, BStromsoe <bstromsoe@> wrote:
> >
> > Body Type : W126
> > Rims: Light Alloy Disc Rims 5.5J x 14 H 2
> > Fuel Tank Capacity: 21.1 gal
> > Tires: R 14
> > Fuel Tank Reserve: 2.8 gal
> > Fuel Consumption : 28.6 mpg
> > Â
> > brian from laverne, ca
> > Mary (195K)Â Martha (280K)
> > 1983 w123 300d's
> >
> >
> > ________________________________
> > From: williamc <wmcowart@>
> > To: diesel_mercedes@yahoogroups.com
> > Sent: Saturday, August 4, 2012 5:14 AM
> > Subject: [diesel_mercedes] Fuel Tank Question
> >
> >
> > Â
> > 1983 300SD, how many gallons is the fuel tank ? Bill C
> >
>
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