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Old 05-11-2008, 07:16 PM   #1
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Join Date: Mar 2008
Posts: 105
Country: United States
Dug out my mpg notes.

What an eye opener it was to read what has gone on since 2-05.
The car is a 97 Volvo 960 (3500lbs) Cd .36, 24V 2.9 L automatic with 90K miles on it.
Base mileage (67K miles) before any mods was 25.51 mpg.
After increase in air pressure, Auto-Rxing the motor, and filling with synthetic fluids and setting a maximum speed limit of 65mph, I jumped to 27.25 mpg.
Then after adding some custom undercarriage metal work the trip averages jumped to 28.85 mpg.

I even have 2 tanks where I broke 30 mpg.

I did some speed testing when I was down in Naples in July of 07.
I thought some of the lead foots might like to read my results.

The test road is Rt 41 between Naples and Miami. I like this road for testing because it is very flat and most of the traffic now takes I-75 across the state. My start point was the turn off for Everglades City and I ran 10 miles east then turned around and ran west back to my starting point.

Scan gauge readings were as follows.
SG is extremely accurate to the pump fill numbers.
As long as you stop at the next .25 after the first click of the nozzle.

The mpg of each 20 mile run is as follows.

50 mph 35.4 mpg
55 mph 33.9 mpg
60 mph 31.15 mpg
65 mph 28.5 mpg

After reviewing my notes I don't think I'll be doing 65 in the 55-60 mph speed zones to make up a little time. I'm just going to leave an hour earlier when I head down to Fl. in July.
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