What advantage do you see in the 5w40? I use it but only because its usually
slightly cheaper and is better in the cold here in New England but other than
that I see no real advantage. I use 15w50 in my garden tractor because it leaks
less but still starts better at -10F than 10w40 conventional oil.
5w40 M1 *might* have slightly better (or stronger) cleaning action but thats a
big might...
-Curt
Date: Wed, 03 Jun 2009 10:59:54 -0700
From: tyler <casi...@usermail.com>
Subject: Re: [MBZ] our 190D starts to burn oil
To: Mercedes Discussion List <mercedes@okiebenz.com>
Message-ID: <4a26ba1a.9020...@usermail.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
You'd probably be better off with 5w40 Turbo Diesel Truck than 15w50.
There's a good chance that your oil burning is caused by stuck rings. I
would try to run it hard as often as possible, and keep running Mobil 1
(hopefully 5w40). The carbon could clean out, and your compression return.
If your crankcase breather is clogged, it can also cause the blowby
gases to force out past the oil seals, and make the engine blow oil out
on the ground. This could be the cause of your oil loss, and the blue
smoke could be an injection system issue.
I suppose it is possible for the engine to be just worn out also, with
300k miles!
Tyler
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