Dropped in since my other MPG board is gone - Fuelly Forums

Android Users - Coming Soon! - Migrating from aCar 4.8 to 5.0

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Old 03-18-2008, 07:09 AM   #1
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Dropped in since my other MPG board is gone

I use to belong to mpg Research and they went Bye Bye it seems.
I've been into getting better MPG since about 1997.
Presently own a 1987 Volvo 740 Turbo wagon which I have been modding since about 1997. I also picked up a 1997 Volvo 960 which is my dedicated highway car.
The Volvo wagon mods came out of a need more than a want. I drive 1180 miles each way to visit family in Naples Florida. Which meant having to stop for fuel every 325-340 miles. When you have been on the road 18-19 hours that last fuel stop 100 miles from your destination is frustrating.
So I was going to go the easy route and install a bigger fuel tank (80L) from a newer sedan. Well being I own a wagon that wasn't going to work, not enough room under the car.
Well then I had to look at getting 50 to 75 miles more out of a tank of gas.
24 mpg highway was not enough I needed at least 28.5 mpg.
Started by lowering the car and removing the roof rack for better aero numbers. I ripped out the automatic transmission and rear end and replaced them with a manual transmission and the highest gears I could pull out of a Volvo in a junk yard. The car originally had 4.10 rear gears and now has 3.31 gears. Replaced the 15 inch wheels with 16 inch for just a little more drop in rpms. Filled all the fluids in the car with synthetic and I got to my planned MPG. Today the car at 65 mph will pull at least 29.5 to 30.5 mpg.
Not bad for a car with 359,500 miles on the clock and a original Cd of .39.
Soon to be retired at 400,000 miles.
I just started playing with the 960 since I just got in in Feb 05. Best I could pull at 65 mph was about 25.5 mpg. Cleaned out the motor with an Auto-Rx treatment and saw a quick 1-1.5 mpg increase. I guess a internally clean motor is a happy motor. I did some custom sheet metal mods under the car, filled it will all synthetic fluids and raised the tire pressure from 36 psi to 40 psi. Now 28.5-29 mpg highway are the norm at 65 mph. 3600 lbs and .36 Cd make any gain in gas mileage a gift. Lowering it is economically unfeasible. The kit available from Volvo is grey market and $2500. Looking this summer at extending the front spoiler down another 1 to 2 inches. Also looking into getting rear wheel opening covers made that can be snapped on and off easily.
One reason I hang on these boards is when I replace my wagon I want to get a very fuel efficient vehicle to start with as my daily driver. I want at least 24 to 25 city and at least 35 highway.
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Old 03-18-2008, 07:58 AM   #2
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Welcome! You'll fit right in here. Put your vehicles in the garage, and if you want something with those kind of numbers around town - depends on if you need seating for many or just 1 or 2. LOTS of vehicles get that around town, even in an automatic - Honda, Toyota, Nissan, etc.
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Old 03-18-2008, 08:15 AM   #3
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if distance between fillups is a problem, store two 5 gallon gas cans in the car when you go on the road trip. at least it helps if a gas station is another 50 miles away and your on E already
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Old 03-18-2008, 08:18 AM   #4
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Quote:
Originally Posted by civic94 View Post
if distance between fillups is a problem, store two 5 gallon gas cans in the car when you go on the road trip. at least it helps if a gas station is another 50 miles away and your on E already
Use your gauges wisely too.

When I get my last Gas bar I know I have about 60-80 miles left. (I've never ran out of gas so who knows)
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Old 03-18-2008, 09:51 AM   #5
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Hi, I'm another refugee.
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I remember The RoadWarrior..To understand who he was, you have to go back to another time..the world was powered by the black fuel & the desert sprouted great cities..Gone now, swept away..two mighty warrior tribes went to war & touched off a blaze which engulfed them all. Without fuel, they were nothing..thundering machines sputtered & stopped..Only those mobile enough to scavenge, brutal enough to pillage would survive. The gangs took over the highways, ready to wage war for a tank of juice
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Old 03-18-2008, 12:39 PM   #6
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ALS -

Welcome to GS! You're already a veteran. Considering all the mods you made, you should have an MPG Research platoon patch or something, .

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