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  #1  
Old 06-27-2007, 10:12 AM
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Location: Europe, Hungary
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your choice of motor oil for 'ye olde Diesel'

Just curious...

It's about time I changed oil & filter on my 1987 W124 300D Turbo. It has 300k+ miles on it.

Because of the high mileage, I was thinking about getting some heavy duty 15W-40 Castrol and MAHLE filter. What do you think of this? Would it be good enough or is it unnecesarry?

Oh, one more thing!
How often (miles) do you change your oil & filter?

Thanks in advance!

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previous:
1977 W123 200D - the slowest car I've ever driven, 500k+ miles when sold
1992 W124 250D - 257k miles when sold
2002 VW Polo 1.4 - 100k miles when sold
current:
1987 W124 300D Turbo - 320k miles
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  #2  
Old 06-27-2007, 10:22 AM
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Mobil 1 Turbo Diesel blend

OEM filter
Oil & filter every 3K miles....
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As of 2/2010:
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97 S600
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  #3  
Old 06-27-2007, 10:33 AM
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Rotella 5w-40 synthetic diesel oil, 7,500 miles filter and oil change.
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'91 300D 2.5 Turbo 330K
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  #4  
Old 06-27-2007, 10:35 AM
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Delo 400 or Delvac MX, can't be beat. Delvac-1 or Delo synthetic for truly extreme conditions.
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  #5  
Old 06-27-2007, 10:39 AM
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Oil & Filters

Rotella synthetic 5w40 (Can't find Mobil 1 Diesel around me) every two months
Mann filters every month

Do a lot of driving, 84 mile commute one way...
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  #6  
Old 06-27-2007, 11:45 AM
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5W-40 Rotella synthetic, Mobil 1 or Delvac synthetic every 5,000 miles all year around.
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  #7  
Old 06-27-2007, 01:01 PM
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Lubro Moly Touring Hi-tech diesel oil 15w40 with a Mahle or Mann filter every 3k.
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  #8  
Old 06-27-2007, 01:11 PM
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Location: Minneapolis, MN
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Rotella 5w40 synthetic and do a full change every 5k. I'm currently using the Bosch filter. I'll probably bump it up to 7.5k miles.

Their dino oil is also highly rated -- I've asked plenty of long time diesel folks and they swear by the regular (even running it in a gasser hot rod!).

But I opted for the longer changes and the ability to start without a block heater down to -4F.

Though when I changed to synthetic (it was 15 degrees!) I did start getting an oil leak. Turned out it was the drain plug -- a new one and a new copper gasket and now nary a drop.
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  #9  
Old 06-27-2007, 01:12 PM
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Delo 15w40 and a Wix.
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  #10  
Old 06-27-2007, 01:15 PM
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OEM Filter with Mobil Delvac 1 (5w-40) every 5k.

The 603 loves it, 231k miles and running strong.
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1987 300TD, 1987 300TD
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  #11  
Old 06-27-2007, 01:41 PM
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Anyoil that has a diesel rating (CF, CH etc... usually found in gal. jugs) and Mann, Mehle or WIX filters. Anywhere from every 3K to 5K miles, depending on conditions such as city/highway and hot/cold temps.
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  #12  
Old 06-27-2007, 01:52 PM
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OEM filter, Delvac 1 5W40, every 8,000 miles, all cars including gassers. Jim
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Own:
1986 Euro 190E 2.3-16 (291,000 miles),
1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000,
1988 300E 5-speed 252,000 miles,
1983 240D 4-speed, purchased w/136,000, now with 222,000 miles.
2009 ML320CDI Bluetec, 89,000 miles

Owned:
1971 220D (250,000 miles plus, sold to father-in-law),
1975 240D (245,000 miles - died of body rot),
1991 350SD (176,560 miles, weakest Benz I have owned),
1999 C230 Sport (45,400 miles),
1982 240D (321,000 miles, put to sleep)
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  #13  
Old 06-27-2007, 02:03 PM
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I use a good filter, either the Wix or the turkish Fram for my 617, I believe that any oil that has the seal for the API aprroval for the latest Diesel certification should be good. at that point I just pick the cheapest one. Sometimes it's Shell Rotella, sometimes it Castrol (RX?).
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  #14  
Old 06-27-2007, 02:39 PM
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Join Date: Dec 2005
Location: Cloudcroft, NM & Hueco Tanks, TX
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i gotta wonder (pics)

for the experts, old guys, and accomplished mechanics...have you ever seen a failed MBZ OM motor and said to yourself (and/or the owner of the failed motor) "hey you should have been using xxxxxxxxxx motor oil instead."

does anyone drink their motor oil, new or used? then the choice would really matter, like beer. i choose

Rotella 15W40

and



comments, anyone?
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  #15  
Old 06-27-2007, 03:42 PM
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Mmmmm, lager...

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My drivers:
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