Ideally you want to use an oil with lots of detergents thats good at suspending
crud and depositing it in the filter. Synthetic oil is great at that.
However that said I'm sure good diesel oils are also quite good.
My 190D was badly gunked up. Early oil analysis indicated very high iron
levels. However after a couple changes and hard driving the iron levels started
to come down and now (nearly 2 years later) are normal at 10,000 mile intervals.
If I had another badly gunked up engine I'd probably run conventional oil in it
and change at 3,000 miles. If that sample showed high levels of any bad stuff
I'd run conventional again until the gunk levels (iron and such) came under
control, then I'd switch to synthetic and work up to a longer interval.
-Curt
Date: Tue, 27 Nov 2007 12:39:27 -0600
From: "Robert Bigham" <[EMAIL PROTECTED]>
Subject: Re: [MBZ] Cleaning enigine inside with synthetic oil
To: mercedes@okiebenz.com
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=US-ASCII
In recent issues, some have remarked that Mobil 1 or (maybe)
similar synthetic oils will clean out interior engine nasties, or
words to that effect.
Is that for real? I'm talking about the black almost crusty crap
that may accumulate on interior engine surfaces. I'd like to
hear from someone who claims to have actually done it.
Assuming it is for real, how does one use it for this purpose?
Change oil and filter, obviously. Then run for how long? How
many miles/change oil and filter cycles are thought needful?
In a past life I knew a fellow who would pour the same gallon
of diesel through an engine repeatedly for this purpose with engine
initially warm but not running. He would change the diesel when
he thought it was nasty enough and quit when he stopped getting
black nasties dissolved or suspended in fresh diesel.d
Does anyone have any comment on that?
Does anyone have a recommended other procedure for the
same purpose?
Thanks all.
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