Any of the fancy names on any oil ("Turbo Diesel Truck" and "Truck and SUV" are
a couple examples" are just marketing BS, ignore them.
Marshall said, and MB's qualifications confirm, that there are 3 weights of M1
considered acceptable in the 61x and 60x engines of the older cars (folks have
been saying pre-07) they are, in increasing order of desirablity (Marshalls and
my sentiment) oh and before anybody pitches a fit, yes I've tried all of them
over many thousands of miles...:
0w40
15w50
5w40
I don't like the 0w40 as its so thin cold it'll tend to leak even in a
relatively tight engine.
The 15w50 is a good (maybe even great) oil and is nice in a slightly leaky
engine as it'll tend to leak less. I like it in a largely highway driven 616
engine as 240Ds driven hard tend to consume some oil and they tend to do less
with 15w50.
I like the 5w40 the most because it makes for easier cold starts in seriously
(-10f or colder) cold temps. My '85 190D used mostly 5w40 over ~90,000 miles
and ran just great, the rest of the car fell apart around the engine. The 0w40
is probably better for extremely (-20f and colder) cold starts but even where I
live thats only 1-2 times a year and 61x engines are going to be iffy at best
starting that cold without auxiliary heat.
60x engines should still start at -20f without too much trouble and I consider
the advantage in 0w40 outweighed by the disadvantage in leakage/consumption
although I wouldn't hesitate to use it if 5w40 wasn't available.
-Curt
Date: Mon, 23 Aug 2010 09:50:35 -0500
From: "R A Bennell" <b...@mts.net>
To: "Mercedes Discussion List" <mercedes@okiebenz.com>
Subject: Re: [MBZ] New addition to the driveway- M1 oil
Message-ID: <nhbblomcoljnegblbjcpcecgoiaa....@mts.net>
Content-Type: text/plain; charset="iso-8859-1"
Another oil question. I don't see much in heavier oil grades here but if I go
south of the border, I see M1 in
heavier grades like 15-50 (I think - if my memory is OK) or 15-40 but it does
not seem to indicate that it is for
diesels. I also saw M1 that said it was for turbo diesel trucks but I think it
was something like 5-40.
Do I dare use either o these in my old 115 non-turbo diesel? So far, I am just
sticking with Rotella but I read
somewhere that it is really not all that wonderful.
Randy
-----Original Message-----
From: mercedes-boun...@okiebenz.com
[mailto:mercedes-boun...@okiebenz.com]on Behalf Of Dillon, Meade M CIV
SPAWARSYSCEN-ATLANTIC,53310
Sent: Monday, August 23, 2010 5:34 AM
To: Mercedes Discussion List
Subject: Re: [MBZ] New addition to the driveway
Lifter tick may be what you have, and the late Dr. M.B. often wrote that
M1 oil would usually quiet that down; that has been my experience.
-Max
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