Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - My first HWY test in 2005 49.94 mpg with no EFI

Smokingwheels · 03-20-2011, 01:14 AM

In 2005 after porting my engine, I had the need to travel 236 miles in my 1984 Nissan Bluebird Wagon to retrieve a child from a country police station in Australia I used approx 3.7 Gal of fuel.

That works out to be 49.94 mpg but I was only doing 49.7 mph on the trip on flat roads.
I have found out since then that the driveway slope effects how much you can put in your tank due to air pockets in it. I have since found that I can fit 1 g more fuel in the tank depending on the angle of the car so that's why when I do my tests now I use the same gas pump to fill up and top up to gauge how much fuel I have used, so my 49.94 mpg could be as low as 44.13.

I just wonder how many people have found that out or taken into account when quoting there figures.

03-20-2011, 01:14 AM	#1 (permalink)
Smokingwheels EcoModding Lurker Join Date: Feb 2011 Location: Australia Posts: 21 Smokingwheels - '84 Nissan Bluebird wagon LX 90 day: 35.99 mpg (US) Red Z - '79 Nissan 280 ZX Blue Ford - '95 Ford Falcon GLI 90 day: 18.18 mpg (US) Thanks: 0 Thanked 1 Time in 1 Post	My first HWY test in 2005 49.94 mpg with no EFI In 2005 after porting my engine, I had the need to travel 236 miles in my 1984 Nissan Bluebird Wagon to retrieve a child from a country police station in Australia I used approx 3.7 Gal of fuel. That works out to be 49.94 mpg but I was only doing 49.7 mph on the trip on flat roads. I have found out since then that the driveway slope effects how much you can put in your tank due to air pockets in it. I have since found that I can fit 1 g more fuel in the tank depending on the angle of the car so that's why when I do my tests now I use the same gas pump to fill up and top up to gauge how much fuel I have used, so my 49.94 mpg could be as low as 44.13. I just wonder how many people have found that out or taken into account when quoting there figures.