Hello,

Does anyone had to face to these two models? Which one is better?


Thanks.

The w140 diesels are rod bender engines.If engine was replaced by a rebuilt it might have updates in it.
If price was good,I'd replace engine and trans from a 300SDL. Then you would a pretty,reliable car.

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1999 w140, quit voting to old, and to old to fight, a god damned veteran

You'd have a hard time finding any S300TD or S350TD because they were never built by Mercedes-Benz.

Yes, but you will find an S300 Turbo Diesel

I assume you are not in the USA?

Go for the S300 TD. It's got the OM606 engine which will be more powerful, and more fuel efficient. It is also less likely to have major internal engine problems then the 3.5l.

-J

__________________
1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.

I think that its
300SD
300SDL
350SD

The "T" in the numbers was only ever used to classify "touring" for the wagon. The "Turbo Diesel" badge on the right side Classified that fact that it had a turbo.

I had a guy tell me they made an s class wagon. I don't think thats the case.

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77' 300D, "Cartman" SOLD @ 150K (didn't know what I had)
83' 300SD, "The Superdon" 325k+ @ 28mpg
95 E320 wagon, "Millennium Falcon" 231k+ @ 24 Mpg
95 E300D, "Sherley" 308k @ 33.69 Mpg, currently anticipating a head
99 Suzuki Intruder "Trudy" @ 45 mpg

The S300 diesel was built in the mid-90s IIRC, it was a W140 with the rod-bender 3.5L but the nomenclature was changed back from S350 diesel to S300 diesel for marketing reasons I assume (in the US).

__________________

Gone to the dark side

- Jeff

The W140 300SD Turbo was a 3.5L 603.
The W140 S350 Turbo Diesel was a 3.5l 603 Sold until 1995, i think the name change happened in 93?
The W140 S300 Turbo Diesel was a 3.0l 606. This was not sold in the US market. Went on market in 1995.

__________________
1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.

A W140 with a turbo 606 would be just about the nicest car I could imagine for highway cruising. Like having a personal express train. *sigh*

__________________
RIP:
2011 E350 BlueTEC, Schwartz 81k (totaled by uninsured drunk driver)
1964 Unimog 404.1 (wrongfully towed by the city)
1994 E320, Brilliantsilber 208k (transmission shuffled off after sudden catastrophic fluid loss)
1982 300D, Silberblau under a blue repaint 256k (sold for parts)
1995 E320 Polarweiss, 131k (sold for parts)
1995 E300D Polarweiss, 287k (totaled by drunk driver)

Although I agree, I feel that the nicest 140 is the one that you're driving, and don't own.

__________________

Gone to the dark side

- Jeff

HA

Let me help you straighten that out. It was called the 300SD for the 92-93 model years, and had the 3.5L OM603. The nomenclature was changed from 300SD to S350 for 94-95 and it still had the same OM603. From 96 on, it was given the turbocharged OM606 engine and renamed the S300, but it was not for the US market.

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'81 MB 300SD, '82 MB 300D Turbo (sold/RIP), '04 Lincoln Town Car Ultimate

Sooner or later every car falls apart, ours does it later!
-German Narrator in a MB Promotion Film about the then brand new W123.

Was the S300 available in LWB?

Sixto
87 300D

As I understand it the diesels were always short wheelbase.

-J

__________________
1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.

Since nobody has directly answered your question, I'll just say that if I had the choice, I'd go with the S300. The turbo OM606 has a generally good reputation. The only thing is that glow plug replacement is a PIA.
Then, you also get the later build W140. The later W140s were more refined than their earlier counterparts. Most of the kinks that plagued earlier W140s had been ironed out by that time, though with it being a W140, it still has its quirks that remind you that it's a W140.

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'81 MB 300SD, '82 MB 300D Turbo (sold/RIP), '04 Lincoln Town Car Ultimate

Sooner or later every car falls apart, ours does it later!
-German Narrator in a MB Promotion Film about the then brand new W123.

I own a '94 S350D. It was imported in '94 and '95 and if I'm not mistaken these were the last S Class diesels imported. (There is another S350 but it is a gasser and still in production I beleive). Depending on who you talk to/read from, there were about 1000 of them imported at a starting price of 65K. The '94 also has an early/late VIN break, rear wheel bearings being different for sure. It is also more closely related to the S420 of that year as far as body parts go. Or so I've learned from searching for parts. Mine has just over 200k, I am the 4th owner, it doesn't drink oil or smoke, but does show the signs of neglect from owner #3. Rounding up aprts is always fun, but the rewards are great when you get it out on the road. It is by far the best ride I've ever been in. I'll put up with the W140 quirks> Now if I can shoe horn a E320CDI drivetrain in it...............
Wayne