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Please advise the normal RPM at 70MPH , I have 3000 RPM and think is to much for diesel eng. If this is a problem how I can fix?

Thanks for your help in advance!!!
 

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I have a 87 300D I'am at 2700 at 70 MPH.At 3000 I'am at 80.I think some body change your axle ratio probaly from a 300E.your axle ratio should be 2.65 and the 300E is 3.07
 

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I have a 87 300 TD wagon and my numbers are the same as Benzguy.

Just out of curiosity, what kind of gas mileage are all you guys getting? I live kinda out in the sticks and in the colder months I get about 27 and now that is warming up to the 60's and 70's I am back to just over 30 MPG. 30.3 on todays fill up.

Mark
 
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