I also have a California '85 300CD and I get about 26-28 combined City/Hwy. If I was able to keep it at the speed limit, I'm sure it would go up, but love it when I pass a gas car at 85mph.

I'm sure if you've put that much into the car you've changed the air filter. Fuel timing?

Craig

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1994 E420, Pearl Black/Black. 2.82 rear diff., AMG front spoiler, painted lower half. SOLD

1972 & 1974 BMW 2002tii's.