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  #1  
Old 10-04-2012, 10:19 PM
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W140 300sd OPINION THREAD

i'm looking at one w/ about 200k on it hopefully for about 3 grand
i used to own a w140 300se and i'm somewhat familiar w/ the problems of that model. are there any additional issues to be wary of for the diesel version? not even sure which motors are in these; i'm guessing 6 cly but i don't think it is the 603....or is it?
any opinions would be welcome.
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  #2  
Old 10-04-2012, 10:22 PM
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I'd say that it's worth $2,000 at the most ASSUMING that it doesn't consume oil.....

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  #3  
Old 10-04-2012, 10:24 PM
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it should have the 603.971 motor. the rodbender. if the rods have been upgraded or the engine has been rebuilt, factory, it'll likely be a strong vehicle for years to come, if it's original, it's life is questionable. many have exceeded 200K, but many many have failed rods/pistons/etc... look for signs of oil consumption, and or burning. listen for scraping/loping from the engine at idle...
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Old 10-05-2012, 01:27 AM
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well that's that....heard too many stories about the rodbenders in the 350sdl since i first bought an mb diesel 14 years ago and began my lurking on this here forum. for some reason i thought this car had a different motor.
thanks for the replies, gents!
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  #5  
Old 10-05-2012, 09:53 AM
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300se would be the gasser one cam motor or two cam motor, wouldn't it? I think the motors are pretty sound but a little thirsty for a six, since its geared fairly low to get the big beast off the line. I have no idea for value.
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  #6  
Old 10-05-2012, 11:26 AM
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Just like with the W126, I would be weary of buying one that didn't have a factory replacement engine.

-J
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  #7  
Old 10-05-2012, 06:12 PM
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Quote:
Originally Posted by t walgamuth View Post
300se would be the gasser one cam motor or two cam motor, wouldn't it? I think the motors are pretty sound but a little thirsty for a six, since its geared fairly low to get the big beast off the line. I have no idea for value.
The W140 300SE has the 722.5 5-speed with first gear start and overdrive so it does far better than the W126 300SE which has 3 practical forward gears and an auxiliary stump puller.

Sixto
87 300D
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  #8  
Old 10-05-2012, 08:36 PM
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i always liked the 21+ mpg i used to get w/ the SE
Quote:
Originally Posted by sixto View Post
The W140 300SE has the 722.5 5-speed with first gear start and overdrive so it does far better than the W126 300SE which has 3 practical forward gears and an auxiliary stump puller.

Sixto
87 300D
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  #9  
Old 10-05-2012, 09:23 PM
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A fellow on the local Craigslist has been trying to sell a 93 (or maybe 94, I can't recall specifically) W140 3.5 diesel claiming over 500k miles and he still drives it daily. He has been asking WAY too much but his price has been dropping. Currently I believe he is ag $4k. I think he started at $7k a year or so ago. I would assume the engine is not original.
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