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faethor said:Good question on how many cars have under inflated tires. When you see a tire low, depending on the tire, it is close to 10psi. Low profiles are even more difficult to visually check.metalman said:I would say less than 1 in 20 vehicles I see are driving with under inflated tires, because if you do, you'll have a blowout with economic conquences more severe than mearly waisting some gas. It's more common to see a car being driven with 4 donut tires than under inflated tires.
Radial tires appear slighlty under inflated at full pressure. Low profile tires (stiff sidewalls) are almost run flat
faethor said:Some, not all. And not all cars are the same level of variability and control. For example, GM is just introducing Variable Valve timing on their Cobalt to help improve fuel efficency even more. I agree engines are better. But, yes they still need care. My car is but 3 years old but, for example, needs plugs changed every 30K.metalman said:Cars haven't been built with ignition points and condensers since the late 70's. Modern engines have computer controls, electronic ignitions, oxygen sensors, platimun tipped spark plugs, fuel injection, and use unleaded gasoline. A modern engine can go 100,000-mile without needing a tune up.
Platinum Spark Plugs
It needs the air filter changed and injector cleaner added to the gas tank
Variable valve timing systems were first used in the early nineteenth century on steam engines. Variable valve timing is used to keep the valves open for longer periods of time at high rpm, allowing more air into the cylinder, while allowing the engine to idle at the low speeds.
Ford started using Variable Cam Timing since 1998 in gasoline engines
Navistar began using electronic valve-train for Variable Cam Timing in its 6.0L camless V-8 diesel engines since 2003 (used by Ford in their F-series trucks)
faethor said:US annual oil consumption 759 million barrels -- per what?metalman said:US annual oil consumption 759 million barrels
The Bakken Formation is now being developed using horizontal drilling technology. The Bakken Formation had its estimates of recoverable oil increased from none, to 4.5 billion barrels of recoverable oil.
ANWAR has 4.3 billion barrels of current technically recoverable oil
US Consumes 20.8M barrels per day in 2005 *365 = 7.4Billion barrels per year.
oops 7592 million barrels per year
There is already an existing pipeline to the Prudhoe Bay oil field. so 18 years of the delay is legal delays.faethor said:ANWAR would produce ~875K barrels a day at peak production which takes nearly 20 years to get to.
faethor said:Assuming the rate of usage of oil stays constant that is an addition of 4%. Since usage is predicted to go up the rate you'll see at the pump with ANWAR online is a savings around 1-2 cents per gallon. Bakken is similar another 1-2 cents. Florida off-shore another up to 1 cent. So that's a whole nickel you'll save in 20 years from now.
Crude is now down $32 to $115.20 a barrel from its high of $147.27 on July 11 when President Bush Lifted the Executive Ban on Offshore Drilling.
That is a $0.76 per gallon drop in price.
faethor said:Don't forget about the ~65 million acres the oil companies have already and can drill on. They haven't bothered to get that oil. Instead of spending money to invest in oil production in that land they've held the land, repurchased their own stock, and increased the value of their company. There's an estimated 50% increase in oil production and 75% increase in natural gas if the companies use what they have already in their paws. Giving the oil companies a use it or lose it clause, such as the coal industry has, would be a really great idea. Without it there is no guarantee that they'd use those resources either.
There are economic, technological or legal reasons for these acreages not being produced.