300SD Mileage?

about 24 mpg in commute driving, 26 or 27 mpg on trips.

Be sure the tires are correctly inflated and remember that diesels are basically constant speed engines, not jackrabbits.

Thanks!

I have read here something about "cetane" and when I just filled up the tank today I noticed that the pump said "40 Cetane". Some of the messages on the Yahoo boards indicate that the Mercedes diesel engines run better on higher cetane values than this. Does anyone know about this?

Don't worry about that... just drive it. You got a bargain!

Best I ever got was 33 on a freshly adjusted/tuned car on a 55mph trip of 100 miles. Worst I get is 25. These are imperial gallons.

Yeah, cetane is to diesel what octane is to gas. Thge more the better.

North America has lousy 40 cetane fuel. Europe is 50+. You can get

It's a little bit more expensive but well worth it. Do the math and you'll see you'll pay less per mile covered by paying more for premium.

All above is correct. I've driven my '83 300SD for the last 110,000 miles and get around 23 highway and 26 city mpg. My highway speeds are

I'm not worried about the mileage for the money's sake.. I am more worried about it from a mechanical point of view.

On my 83 300SD with 112,000 mi I get 25 to 26 on the hiway and I drive the limit plus and around town I get 19 to 21mpg.

any thing below 20 you have problems

the case, minus a few cans!

Only 33 miles per imperial gallon? IIRC an imperial gallon is equal to 5/4 of a US gallon. That would translate to only 26.4 miles per US gallon.

That doesn't seem right then. When I wrote 100 I meant 1000. I blamew[1] this new keyboad. Ok lemme try it another way. I get 400-600 miles per tank of fuel. Those would be imperial miles none of this funny metric stuff.