Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help

Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Vintage Mercedes Forum

LinkBack Thread Tools Display Modes
Old 08-25-2008, 11:29 PM
Registered User
Join Date: Feb 2005
Location: Bremerton, WA
Posts: 255
Educate me, diesel W115 owners!

For years, my family owned diesel cars (mostly Peugeots), but I've only ever owned petrol-powered cars.

However, a 1975 300D (I think it's a W115, I think) has become available locally and my wife has fallen in love and I'm persuaded to at least take a look.

So, educate me vintage diesel owners - what am I letting myself in for? What biodiesel blends could I use in this car? Anything I should watch out for? What will frustrate me with a W115, and what will thrill me?
Steven Harrison

1993 300E2.8 - 196K
2001 E320 4MATIC - 86K
Reply With Quote
Old 08-26-2008, 06:57 AM
Registered User
Join Date: Dec 2004
Location: Nashua, NH
Posts: 3,956
Number one thing to watch for is rust. Rockers and quarter panels rust out. Check them carefully and I would pass on any car with substantial rust unless it is a throw-away price. These are unibody cars so the rockers are part of the car's "structure".

You can run any biodiesel up to B100 in them though you might have to replace some rubber hoses in the fuel system but it is no big deal to do that. The W115 is an especially easy DIY car, very simple and intuitive in most cases to work on. Good luck with it.
Marty D.

2013 C300 4Matic
1984 BMW 733i
2013 Lincoln MKz
Reply With Quote
Old 08-26-2008, 02:30 PM
bluebenz's Avatar
Registered User
Join Date: Oct 2006
Location: Bathurst, NB, Canada
Posts: 99
Rust and blower fan are 2 common problems. Rust would be a deal breaker, non-functional blower fan means no defrost and it can be a very long job to repair.

I've had my 76 300D for over a month and I love it. Acceleration is decent from 0-40 mph, slow above 40mph although it cruises nicely at 60-65 mph.

I really like the classic old school looks of the 114-115s, even more when they are equipped with the factory fog lamps and painted hubcaps. Pre 74 models are even nicer with their smaller chrome bumpers.
Attached Thumbnails
Educate me, diesel W115 owners!-300d-002.jpg  
Reply With Quote
Old 08-26-2008, 04:34 PM
JimFreeh's Avatar
Benz addict
Join Date: Mar 2007
Location: Hampton Roads, Virginia
Posts: 3,300
To clarify....

There are two interior fans.

One is for the ventilation and defrost, the other is dedicated to the A/C.

A/C fan is a slam dunk to get to, the ventilation fan is a major job.

If you have to have a defroster to pass inspection, this is a major impediment. If not, once the car is moving, you can get a surprising amount of airflow out of the system with a fan boost.

Rust is the other biggie.

I've been driving my 71 250C to work a couple of days per week recently, and I'm falling in love with this chassis once again. What a nice, classic look as you glance over the hood at that star with the false radiator cap, and the two high fenders. Makes my 83 300D and 90 560SEL look pretty bland by comparison.

These are lovely cars, and have a nice vintage appeal. but remember, they are also old cars, and require above average care and maintenance.

14 E250 BlueTEC black
94 E320 Cabriolet Emerald green
85 300TD 4 spd manual dark blue
Reply With Quote
Old 08-26-2008, 04:39 PM
Monomer's Avatar
Colonel Blitz
Join Date: Jan 2006
Location: Detroit, MI
Posts: 836
rust is a huge problem. We just replaced the floorpans in ours (caused from a leaking window seal and 30 years of sitting.)

anyone got a link for fan replacement, I'm afraid ours is going.
-1983 VW Rabbit LS Diesel (5speed, VNT/Giles build)
Reply With Quote
Old 08-28-2008, 01:48 AM
Registered User
Join Date: Feb 2005
Location: Bremerton, WA
Posts: 255
Thanks for all the useful tips! Might be taking a look at the car this weekend.
Steven Harrison

1993 300E2.8 - 196K
2001 E320 4MATIC - 86K
Reply With Quote
Old 08-28-2008, 07:33 AM
Registered User
Join Date: Nov 2007
Location: Palm Bay Fl
Posts: 418
I have 2 115s that I drive. They are a blast to drive. I just got a 1976 240D standard. My automatic 1970 220D is a good car but not as fun to drive as the standard.
Hear are some other people that love the 115s
1976 240D
1976 240D parts car
1970 220D daily driver
Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 02:36 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page