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Old 12-22-2000, 08:36 PM
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dakota dakota is offline
Moof !
Join Date: Jul 2000
Location: Seattle WA USA
Posts: 469
Synthetic Oil

With my '90 300E, I have obtained a consistant 25-27 mpg at 75-90 mph with the A/C on. I use synthetic oil (Mobil 1 10w30) and a K&N air filter.

I don't think I would fool with the ignition system, but those MSD systems or Jacobs Omni Magnum units look interesting....I think some have reported that they helped (comments, Donald?).

You could probably help by lowering the car a bit, but I'm not sure what would be involved and if it would be worth it.

I think the synthetic oil might be your best bet (cost vs benefit). It's not a big investment to try it out, and it definately should not make your mileage worse, unlike what might happen with other attempted "fixes".

Just my 2 cents. YMMV :-)
1992 300CE Sportline Sophie
1990 300E Emma - in the family
1979 240D Josephine - sold, but not forgotten
2004 Pacifica AWD
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