Folks, oil does NOT "break down"! The contaminants increase, and some
additives lose their effectiveness, but the limit for a good synthetic
Diesel oil (Delvac1 and its Mobil1 equivalent) is the soot held in
suspension. In the usual conditions and in a normal engine, the soot levels
typically won't get to the M-B limits until well after 10k miles. I've
confirmed this with LarryT's oil analysis on my 2 older Diesels.
Werner
'90 D 229k
'83 SD 224k
----- Original Message -----
From: "Sunil Hari" <[EMAIL PROTECTED]>
To: "Mercedes Discussion List" <mercedes@okiebenz.com>
Sent: Thursday, February 08, 2007 9:21 AM
Subject: Re: [MBZ] M1 15k Oil
they say 15k, i'm betting it works to 18-20k
my only real concern is that with extended oil change intervals, can the
oil
filters keep up? I've been running M1 5w-40 truck/suv oil, and my real
worry is that the filter will quit before the oil breaks down.
On 2/8/07, Rich Thomas <[EMAIL PROTECTED]> wrote:
So is that M1 15k (Guaranteed!) mile stuff really good for 15k miles? I
put some in my Suburban, it is at maybe 10k miles now and I am getting a
bit noodgy about it. I guess I should trust it, but all this oil talk
has got me paranoid.
--R
Marshall Booth wrote:
> Levi Smith wrote:
>
>> Also, what about the M1 10w-40 "for high mileage engines" would this
>> be
fine
>> for old Benz' and perhaps offer a slight increase in cranking speed on
these
>> 0F days?
>>
>
> Mobil 10W-40 High Mileage is NOT a group IV synthetic oil (like the
> Mobil 1 oils) and while it is API CF rated it is NOT approved for
> Mercedes engines (may not have ever been tested)!
>
>
http://www.mobil.com/USA-English/Lubes/PDS/GLXXENPVLMOMobil_Clean_High_Mileage.asp
>
> I'd use Delvac 1300 or Chevron Delo 400 if you don't want to use a real
> synthetic.
>
> Marshall
