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  #1  
Old 01-09-2023, 08:04 PM
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92/93 vs 94/95 140 diesel

Is there some sort of difference between the 92/93 300SD and the 94/95 S350 that would cause a higher MPG rating? The 300SD is rated at 22 highway and the S350 is 26. Do the later cars have a different rear end gearing ratio?

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Old 01-09-2023, 08:13 PM
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Unsure about the Diff ratio, but I Believe in 1995, the 5spd auto replaced the old 4spd unit
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Old 01-10-2023, 08:07 PM
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The 95 diesel still used the 4 speed.
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Old 01-11-2023, 08:22 PM
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I'm not aware of the W140 603.971 cars having different differential ratios. I think it's even the same as the W126 350SD/L.

-J
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Old 01-12-2023, 10:16 PM
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What year did the w140 get the om606? I’m sure that has an effect.
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Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (113k)
1991 350SD (206k)
1991 300D (228k)
1993 300SD (291k)
1993 300D 2.5T (338k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (265k)

Past Diesels:
1983 300D (228K)
1985 300D (233K)
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  #6  
Old 01-12-2023, 10:49 PM
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The 140 never got the 140 in the US

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