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#1
11-10-2007, 02:05 PM
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Fuel Economy Boost?
Is there anything I can do to the 560 to increase gas mileage? It gets about 13-14 mpg.
Thanks, Dave.
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Currently Driving: 1986 Mercedes Benz 560SEL 1994 Lincoln Town Car 1994 Cadillac Deville 1985 Lincoln Town Car- Retired  The Official Car of a Realtor- Lincoln Town Car The Official Car of the Successful Independent Insurance Agent- Mercedes Benz S Class 
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#2
11-10-2007, 04:19 PM
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Other than a really good tune-up, making sure the engine is operating as well as intended, there is nothing you can do about fuel economy.
 Don't go buying some snake-oil remedy, guranteed to increase fuel economy by 100%. 
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2007 C 230 Sport.
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#3
11-10-2007, 04:48 PM
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Put a chunk of 2 X 4 between the pedal and the floor.
 Other than that just the basics, avoid jackrabit starts, add an extra 2 pounds of air to the tires, avoid long warmups, keep it in tune with clean air filter, reduce your highway speed, etc. All counterintuitive when you have a V8.
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1959 Gravely LI, 1963 Gravely L8, 1973 Gravely C12 1982 380SL 1978 450 SEL 6.9 euro restoration at 63% and climbing 1987 300 D 2005 CDI European Delivery 2006 CDI Handed down to daughter 2007 GL CDI. Wifes 
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#4
11-10-2007, 05:39 PM
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yeah, take out the big v8 and put in a 240d motor and stick!
tom w
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual. [SIGPIC]..I also have a 427 Cobra replica with an aluminum chassis.
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#5
11-10-2007, 07:37 PM
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It's difficult
When you have a very healthy engine like that 5.6 V8, no lockup converter and only a four speed rather slushy transmission, mileage is going to be bad. Changing the differential to one with a slightly lower number might give a mile or 2 per gallon relief in exchange for less exciting performance. Also, keep those tires aired up to the maximum allowable limit. And that piece of 2x4 under the pedal will help, no doubt. With a carburetor, a little vacuum loss would always be good for a little gain, but I don't know if it is of any value with fuel injection.
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Junqueyardjim Christianity, if false, is of no importance, and if true, of infinite importance. The only thing it cannot be is moderately important. C.S. Lewis 1983 Mercedes W123 240D 4 Speed 285,000 on the road with a 617 turbo, beautiful butter yellow, license plate # 83 240D INDIANA 2003 Jaguar Type X, AWD. beautiful, good mileage, Mom's car, but I won't let her drive it!
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#6
11-10-2007, 07:49 PM
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I got 13.2 city in mine.
Have you checked the fuel delivery on the CIS system? O2 sensor? I'm certain the Euro exhaust system would yield some economy as it brings efficiency along with. But I'm doing that simply for the grin factor.
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I'm not a doctor, but I'll have a look. '85 300SD 245k '87 300SDL 251k '90 300SEL 326k Six others from BMW, GM, and Ford. Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG]
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#7
11-10-2007, 07:59 PM
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Haven't checked anything yet. But I will.
Dave.
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Currently Driving: 1986 Mercedes Benz 560SEL 1994 Lincoln Town Car 1994 Cadillac Deville 1985 Lincoln Town Car- Retired The Official Car of a Realtor- Lincoln Town Car The Official Car of the Successful Independent Insurance Agent- Mercedes Benz S Class
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