[W126 Coupe] Oil for 560 SEC

Shayegan, Richard rishayegan at davidson.edu
Mon Apr 16 08:48:10 EDT 2007

If it's a true racing oil then it's not for road cars. If you want to
read why, just go to Joe Gibbs Racing's website, then his online store
and see what it says about the oils (namely not to use them in road cars
and then it explains why).

________________________________

From: mbcoupes-bounces at mbcoupes.com
[mailto:mbcoupes-bounces at mbcoupes.com] On Behalf Of Richard Hogarth
Sent: Monday, April 16, 2007 8:46 AM
To: 'Mercedes Coupes Mailing Lists'
Subject: Re: [W126 Coupe] Oil for 560 SEC


Have you heard anything about Mobil 1 Extended Performance
Racing Oil?
-RPH

From: mbcoupes-bounces at mbcoupes.com
[mailto:mbcoupes-bounces at mbcoupes.com] On Behalf Of Divov
Sent: Monday, April 16, 2007 12:35 AM
To: Mercedes Coupes Mailing Lists
Subject: Re: [W126 Coupe] Oil for 560 SEC

I have always used a full synthetic oil in my car (for the past
10 years)
Reading the posts, this does not seem to be favoured?
Use Total Quartz 9000 which has recently be repackaged in our
market as Total Quartz Racing 10W50.- full synthetic.
Specs: ACEA A3/B3 API SJ/CF.
Any views on this?
I don't have any engine issues yet. Car has 160 000km. No noisy
engine on start up like some other old Merc V8's I've owned
and this cars dyno output is still exactly as per the book so I
assume cam wear is negligible.
----- Original Message -----
From: Richard Hogarth <mailto:R_Hogarth at Foundrycove.com>

To: 'Mercedes Coupes Mailing Lists'
<mailto:mbcoupes at mbcoupes.com>
Sent: Monday, April 16, 2007 6:19 AM
Subject: Re: [W126 Coupe] Oil for 560 SEC

TYPO - the chevy has a 454cui.
-RPH

From: mbcoupes-bounces at mbcoupes.com
[mailto:mbcoupes-bounces at mbcoupes.com] On Behalf Of Richard Hogarth
Sent: Sunday, April 15, 2007 11:12 PM
To: 'Mercedes Coupes Mailing Lists'
Subject: Re: [W126 Coupe] Oil for 560 SEC

I'm curious to see what the oil experts have to say
about fuel washing.
3k oil changes, from my understanding, was a number
based on older additives from the '60s and '70s.
With leaded gas gone and the auto industry demanding
better oils, 3k oil is considered (I thought) to be in brand new
and 5k to 6k changes the standard. I've moved to 4k-5k
and have had no negatives. The drained oil still looks nearly brand new
although I have not had it analyzed. My '84 chevy silverado truck with a
545cui has 278,000 miles on it and my MB has 167,000 miles. The timing
chain is just now worn enough to begin to be of concern . Compression is
perfect and oil consumption is normal.
Perhaps we are all being overly concerned about this oil
business and the short change interval may be the key to longevity,
regardless of the oil.
I also consider it beneficial to the environment to
extend the oil changes. (but that's just me)
-RPH

From: mbcoupes-bounces at mbcoupes.com
[mailto:mbcoupes-bounces at mbcoupes.com] On Behalf Of Jonathan Hodgman
Sent: Sunday, April 15, 2007 10:21 PM
To: Mercedes Coupes Mailing Lists
Subject: Re: [W126 Coupe] Oil for 560 SEC

Interesting, in my chats with Valvoline and Mobil
engineers they have both Strongly recommended use of their diesel oils
in our older gas engines.

The diesel oils have additive packages that are far
closer to what was around when our engines were designed. New oils with
new engines/tolerances/warranty concerns in mind do not...even the high
mileage oils formulations have been changed to a degree that could
negatively effect engine wear.

I have a good friend/mechanic who's 280TE which has had
the ever living snot rung out of it for the past 80 of it's almost 300K
mile life run on a strict Rotella diet. After a recent valve job and
inspection of the cylinders they were nothing if not near perfect.

I have also b/w clients and my personal fleet run up in
excess of 80+ thousand miles on Rotella/Delo.

I am particularly fond of diesel oil in engines that
haven't had regular oil chances and have sludged up quite heavily
internally. I have one customers 560SEC w/ 190K on the clock, when it
arrived the heads/valve covers had heavy deposits. It has now been
almost 3 years of Rotella every 2500 miles and the internals are night
and day from where we started.

I'll be attending a Mobil engineering convention in the
coming months at which point I will get more info to support the above.
Ideally, I'll have some of it in writing.

Lastly, IMHO, 4000 miles on conventional oil is too
long. If I'm doing strictly highway I'll change every 3000, serve
duty/city driving I'll change b/w 2 and 2500. As such the internals of
my engines stay near spotless. I will only consider extended drain
intervals when running Mobil 1/Amsoil/Redline oil.

Jonathan


On 4/15/07, Richard Hogarth <R_Hogarth at foundrycove.com>
wrote:
Jonathan,
It's my understanding that oils (like rotella) which are
designed for diesel engines should never be used in a gas engine.
The main issue is fuel washing and the second issue is
reactivity with sulphur compounds.
The Rotella is not resistant to fuel washing from
gasoline so the rings and cylinder walls are left unprotected with the
obvious result.
Personally I've always like Castrol 20/50 mineral oil
changed every 4k miles and as an engine ages, I"ve started to use High
Mileage for my car.
Does anyone have any other thoughts
-RPH

From: mbcoupes-bounces at mbcoupes.com
[mailto:mbcoupes-bounces at mbcoupes.com] On Behalf Of Jonathan Hodgman
Sent: Sunday, April 15, 2007 6:17 PM
To: Mercedes Coupes Mailing Lists
Subject: Re: [W126 Coupe] Oil for 560 SEC

I like Rotella 15/40, although w/ the new formulations
and their lack of ZDDP I now add GM's tappet/cam lube to bring levels
back up to pre-2007 specs.

Or, if you engine is tight/leak free I'd run Mobil 1
20/50, but again w/ the same additive.

Jonathan
On 4/15/07, Kell <kell13 at adelphia.net> wrote:

What is the best oil to use in a 1988 560 SEC with
130,000 on it? anyone

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1996 S600 Euro "Scharnhorst"
1991 560 SEC Full Euro ECE
1991 560 SEC 226Hp/271ft/lbs:)
1989 560 SEC AMG (N.Amer 250/295)
1987 560 SEC US Spec
1986 560 SEL AMG 6.0L 32V
1986 560 SL White on Burgundy
1985 500 SEL Euro (Parts Car)
1985 300 CD For Sale
1980 280 SE Euro
1978 300D TMU
1987 560 SEL 162K Midnight Blue on Gray RIP:(
1987 560 SEC Sold
1992 E300D 140K Champagne on Parchment tex (Sold)
1990 560 SEC 154K Anthracite on Gray (Sold)
1988 300 TE 160K Burgundy on Palomino (Sold)
1980 280 SE US 185K (Sold)
2006 Z4 3.0Si M spec 6sp

The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.



--
Blue Ridge Mercedes/AMG East
Offering Enthusiast Service, Restoration and
Modification.
Providing quality parts to discriminating customers in
all parts of the world.
Located in the Greater Atlanta area.
http://www.blueridgemb.com
http://www.AMGEast.com

1996 S600 Euro "Scharnhorst"
1991 560 SEC Full Euro ECE
1991 560 SEC 226Hp/271ft/lbs:)
1989 560 SEC AMG (N.Amer 250/295)
1987 560 SEC US Spec
1986 560 SEL AMG 6.0L 32V
1986 560 SL White on Burgundy
1985 500 SEL Euro (Parts Car)
1985 300 CD For Sale
1980 280 SE Euro
1978 300D TMU
1987 560 SEL 162K Midnight Blue on Gray RIP:(
1987 560 SEC Sold
1992 E300D 140K Champagne on Parchment tex (Sold)
1990 560 SEC 154K Anthracite on Gray (Sold)
1988 300 TE 160K Burgundy on Palomino (Sold)
1980 280 SE US 185K (Sold)
2006 Z4 3.0Si M spec 6sp
________________________________

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Postings remain property of MB Coupes, L.L.C.
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