I just drove about 110 miles and I had a full tank of gas when I started, but now I have a little more than half a tank of gas. I noticed that when I drive with my ac on my mpg is significantly reduced. without my ac my highway mileage is much better and I would only be maybe somewhere between the halfway mark and the full tank. Air filter changed on 5/22/10
*Transmission filter changed on 5/22/10
*Transmission fluid changed on 5/22/10
*Distributor cap changed on 5/22/10
*Distributor rotor changed on 5/22/10
*Fuel filter changed on 5/22/10
*Oil filter- Bosch Premium part number (3421). Done on 3/13/10 @ 254747
*Oil GTX 20-50W 5.5 qts done on 3/13/10 @ 254747.
*A/c cut off switch replaced 6/9/10
*A/c temperature sensor replaced 6/9/10
*Auxillary fan switch replaced 6/9/10
*Air temperature sensor replaced 6/9/10
*Radiator flushed. 1 gal Zerex G-05 added. Done on 11/09/09 @ 248,946 miles.
*A/C-heater control valve done on 11/5/09
*Check air valve. Done on 10/9/09
*Bosch O2 sensor replaced. Done on 10/7/09 @ 246,939
*Bosch H9DCO Spark plugs 6 total. Done on 10/6/09
*Bosch spark plug wireset. Done on 10/6/09 @ 246,560
*Tires inflated and rotated and balanced regularly.

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1990 190E 3.0L