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    how are u guys gettin 55+mpg?!?!?!?!?!

    look up my post that started the thread "Driving for better mpg" in which I desribe how I have my lifetime 59mpUSg thats over 6 years, and 120,000 miles. cheers.
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    Aerodynamic changes...

    There is another aspect to be considered. While the combustion rate is reasonably consistent, you also have to consider the Ignition delay, that is the amount of time that elapses after the fuel is injected, and before it starts to burn, while the fuel absorbs heat from the air in the cylinder...
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    Hypermiling a TIP tips

    " I'd suspect they all have a very light foot, and drive very reasonably. " No, I dont. You seem to be trying to translate your experience with your gasser, and appy it to our TDI's. It doesnt translate, the Diesel has different characteristics. Especially when it comes to the fun factor...
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    Hypermiling a TIP tips

    The engine's fuel efficiency is not a constant, it varies by a factor of 3. Thus driven on a level ground its consuming fuel at one efficiency level, driving uphill its at another, better, efficiency level. So clearly the hilly route wins.
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    Hypermiling a TIP tips

    Lugging a diesel engine? I dont think so. Diesel engines cannot Lug. Diesel engines like to work in overload. My engine currently has 120,000 miles on it and is 6 years old. Runs as strong as ever. Never been touched, other than oil changes and filter changes. hth
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    Hypermiling a TIP tips

    You are correct. almost full boost at 1750 rpm, but its pretty good from 1200 to 2100.
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    Aero aids: Gurney Lips

    It is correct they exist to reduce aerodynamic drag, not sure if its the same mechanism you refer to. Also the rear wheel spats reduce aero drag also. cheers.
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    Whats your best MPG - 2004 TDI (PD) Manual

    66mpUSg else see my sig. for more info check the thread titled "Driving for better mpg" cheers
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    Aerodynamic changes...

    remove the rear seats, and move any weight you carry forward. Run the front tires slightly lower pressure, the rears slightly higher. This will have the effect of creating an underbody shape that is a wedge, small end forward, which will reduce the aerodynamic drag of the vehicle attributable...
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    Weight/Fuel Savings

    It could be argued that increasing the weight of the car by 100lbs will reduce your mpg. If 1) you also increase the tire pressure. 2) the weight is placed forward, 3) and you use the pulse and glide technique. food for thought. cheers.
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    What rpm for peak efficiency?

    depends on how much HP your application requires. Determine the HP, and gear the engine such that it produces that HP (plus5%) at the said rpm that its geared for. if you application needs 20HP then gear to 1200 rpm. 30HP= 1300 rpm, 55hp = 1750 rpm, and so on. That is where the best fuel...
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    Fuel economy or longevity?

    Just to try to collect some factual data (subjective though it may be), I would like to ask members to chime in with the following data. 1) How many miles does your car have on it? - 120,000 2) How do you normally drive your car? low rpm, heavy right foot, read the thread "Driving for better...
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    Your strategies to increase your mpg?

    1. slow down. 2. 85% of max allowed tire air pressure (reading from sidewall) 3. a clean filter, as standard 4. coasting in gear, to a stop sign = no fuel used, and no brakes used. 5. quality fuels, BP, Conoco where I live. Fuel additive, Howes 6. high quality crankcase lubricant, use whats in...
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    October 2007 Monthly MPG Contest

    Driver: gdr703 Miles: 853.1 Gallons:14.97 Model year: 2002 Model: Golf Tranny: 5M Fuel type: B50 mpUSg: 57
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    Economy question

    If you are coasing out of gear and end up using your brakes, then it would have been better to coast in gear. Coasting out of gear is illegal in some locales. It is better to coast in gear when travelling at 30mph, but when travelling at 80 mph its better to coast out of gear, because: 1) The...
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    Need Help Evaluating Fuel Economy

    There are plenty of those posted, a search will find them probably in the performance section. Your poor fuel economy is because of your driving habits. The fuel efficiency of this engine occurs 1) at high power output, and 2) in the range 1300 to 2100 rpm. As soon as you go over 2100 the fuel...
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    Shifting for fuel economy

    I do this regularly, excpet I do it with a heavy right foot. I listen and feel my engine pulling strongly, and smoothly. Absolutely no lugging. Lugging is a condition that applies specifcally to a gas engine. Its to do with the time it takes for the fuel to combyust, and that the engine is...
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    September 2007 Monthly MPG Contest

    Driver: gdr703 Miles: 880 Gallons: 15.09 Model year: 2002 Model: Golf Tranny: 5M Fuel type: B50 MPG: 58.3 cheers.
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    Shifting for fuel economy

    a coupls points here: 1. Diesels dont lug. Its just not possible. 2. I regularly get 900 on a tank. 3. My tire pressures are at 42. 4. I change gear regularly at 1600. cheers,
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    September 2007 Monthly MPG Contest

    Driver: gdr703 Miles: 953 Gallons: 15.71 Model year: 2002 Model: Golf Tranny: 5M Fuel type: B50 MPG: 60.7 mpUSg cheers.
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