H-townbenzoboy

Here are the average MPG figures over 12 tankfuls in my 1982 300D.
Dates from fillup to fillup: 9/2/05-9/10/05

Vehicle: 1982 300D turbodiesel

Miles driven from fillup to fillup: 313.9

Mileage Percentage: 50% highway, 50% city

MPG: 18.9 MPG
************************************************** *******
Dates from fillup to fillup: 9/10/05-9/20/05

Vehicle: 1982 300D turbodiesel

Miles driven from fillup to fillup: 312.7

Mileage Percentage: 50% highway, 50% city

MPG: 20.6 MPG
************************************************** *******
Dates from fillup to fillup: 9/20/05-9/29/05

Vehicle: 1982 300D turbodiesel

Miles driven from fillup to fillup: 315.1

Mileage Percentage: 50% highway, 50% city

MPG: 21.9 MPG
************************************************** *******
Dates from fillup to fillup: 9/29/05-10/7/05

Vehicle: 1982 300D turbodiesel

Miles driven from fillup to fillup: 309.9

Mileage Percentage: 50% highway, 50% city

MPG: 19.5 MPG
************************************************** ********
Dates from fillup to fillup: 10/7/05-10/14/05

Vehicle: 1982 300D turbodiesel

Miles driven from fillup to fillup: 388.3

Mileage Percentage: 60% highway, 40% city

MPG: 23.5 MPG
************************************************** ********
Dates from fillup to fillup: 10/14/05-10/25/05

Vehicle: 1982 300D turbodiesel

Miles driven from fillup to fillup: 326.5

Mileage Percentage: 50% highway, 50% city

MPG: 21.3 MPG
************************************************** ********

AVG MPG for this time period which included half a dozen fillups: 20.9MPG





************************************************** ********
Dates from fillup to fillup: 10/25/05-11/4/05

Vehicle: 1982 300D turbodiesel

Miles driven from fillup to fillup: 375.6

Mileage Percentage: 50% highway, 50% city

MPG: 22.6 MPG
************************************************** *******
Dates from fillup to fillup: 11/4/05-11/12/05

Vehicle: 1982 300D turbodiesel

Miles driven from fillup to fillup: 292.3

Mileage Percentage: 50% highway, 50% city

MPG: 22.5 MPG
************************************************** *******
Dates from fillup to fillup: 11/12/05-11/18/05

Vehicle: 1982 300D turbodiesel

Miles driven from fillup to fillup: 367.6

Mileage Percentage: 60% highway, 40% city

MPG: 23.9 MPG
************************************************** *******
Dates from fillup to fillup: 11/18/05-11/28/05

Vehicle: 1982 300D turbodiesel

Miles driven from fillup to fillup: 355.4

Mileage Percentage: 50% highway, 50% city

MPG: 22.4 MPG
************************************************** ********
Dates from fillup to fillup: 11/28/05-12/8/05

Vehicle: 1982 300D turbodiesel

Miles driven from fillup to fillup: 326.1

Mileage Percentage: 50% highway, 50% city

MPG: 21.1 MPG
************************************************** ********
Dates from fillup to fillup: 12/8/05-12/16/05

Vehicle: 1982 300D turbodiesel

Miles driven from fillup to fillup: 385.4

Mileage Percentage: 50% highway, 50% city

MPG: 23.2 MPG
************************************************** ********

AVG MPG for 10/25/05-12/16/05 which included half a dozen fillups w/o additives: 22.6 MPG

AVG MPG for 9/2/05-12/16/05 which included 12 fillups w/o additives: 21.7 MPG

During the next 12 tankfuls, I will add 4 oz. of PowerService DieselKleen to the tank. I will calculate the average MPGs with the additives, then for the 12 tankfuls after that, I'll calculate the average MPGs without fuel additives to see if there really is any benefit mileage per gallon wise to using additives. Keep your eyes peeled for the results.

-Joe

frogstaple

I'm looking forward to the results.