I don't think the Boron tracer was used to differentiate a retail vs commerical
offerings. If I remember, the Boron tracer helped differentiate CAT DEO 5w40
from Mobil branded 5w40. I have not had much success with the 0w40 and have
stuck with 5w40 occassionally using 15w50 in some MB's. My Jeep 4.0, Subaru,
Kubotas, and Dodge truck all get some variant of Mobil 5w40 or Chevron or Mobil
15w40. The farm equipment generally gets 15w40. With new emissions
requirements, I believe the Delvac formulations are now different whereas
before we believed them to be the same.
-----Original Message-----
From: Curt Raymond <curtlud...@yahoo.com>
Sender: mercedes-boun...@okiebenz.com
Date: Sat, 24 Jul 2010 10:23:18
To: Diesel List<mercedes@okiebenz.com>
Reply-To: Mercedes Discussion List <mercedes@okiebenz.com>
Subject: [MBZ] M1 5w40
We used to go through this all the time, I'm glad we're down to a couple times
a year.
IIRC Marshall said there were 3 MB blessed M1 formulations, 0w40, 15w50 and
5w40.
What is now bottled as 5w40 "Turbo Diesel Truck" used to be 5w40 "Truck and
SUV" (that name is now used on a 5w30 I believe) and is the same stuff (less a
boron tracer) as Delvac 1.
Supposedly Delvac 1 met a slightly more stringent spec than the 0w40 or 15w50
but all are good oils.
My '85 190D had a steady diet of 5w40 for 90,000 miles with no issues
whatsoever. I liked it because it was thin and allowed easy starts in the
winter time while not pouring out of ever seam like the 0w40.
My '83 240D back before I went super discount had at some point each of the M1
formulations. The 0w40 made the car start much better in extreme (-20F) cold
but leaked very badly even back before that engine leaked at its worst. 15w50
leaked much less and was still easier to start with in the winter time than
conventional oil and the 5w40 was someplace in the middle.
I get M1 5w40 at Autozone, about once a month they have a deal with 5 quarts
and a filter for $25 at which point I usually get 10 quarts (five in the
morning and five in the afternoon). I usually get a filter for the Ranger and
put it in the truck when that goes to Spee-Dee for a change for which they
credit me $5.
I've also been using M1 5w40 in the motorcycles. When I first changed to it I
noticed that shifts got a little more crisp. I also think my Honda CB900f has
gotten a bit easier to start. Its a 4cyl and those bikes are notorious for hard
cold starts and sometimes difficult restarts when fully warm.
-Curt
Date: Sat, 24 Jul 2010 10:16:57 -0400
From: "Larry T" <l02tur...@comcast.net>
To: "Mercedes Discussion List" <mercedes@okiebenz.com>
Subject: Re: [MBZ] Report-back on engine lurch-restraint struts
Message-ID: <210e1d6de6da49368c0d6a1ebecc4...@laptop>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
I needed oil for our '91 300D (182K mi) and finally found some at Advance
Auto - "M1 Turbo Truck" in 5W40. I hesitated at 1st but the bottle says
"substitute for 15W40"
I haven't seen this before. The present oil (15W40 M1) has about 4k on it
so I'm getting ready. But since we're having 100F days here I'm wondering
if it's a good idea to put a 5W in it?
I'm seeing oil pressure around 1.5 bar when idling at 210F.....
any comments?
Thx
LarryT
91 300D
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