[W126 Coupe] Oil change

[gary wingert]

 Most lubricants listed in and recommended by the owner's manuals are there because the oil company paid the car manufacturer to push their product.  My SLK230 's manual recommended 0w-40 Mobil 1.  I used that without ever having any problems.  As far as what viscosity to use it is totally dependent on your oil consumption and weather conditions.  If 0w-40 tends to bypass the rings or valve guides you may want to move to a heavier viscosity.  I'm still running 10w-30 in my '67 230 but have gone heavier in my '67 El Camino.

--- On Mon, 11/15/10, Dick Spellman <dick.spellman at gmail.com> wrote:

From: Dick Spellman <dick.spellman at gmail.com>
Subject: Re: [W126 Coupe] Oil change
To: "Mercedes Coupes Mailing Lists" <mbcoupes at mbcoupes.com>
Date: Monday, November 15, 2010, 6:49 AM



  

    
    
  Mark,

    

    There are only a few Mobil1 oils that are listed as acceptable for
    the MB's.  0-40 and 15-50 in so far as I know.  I use 15-50 in the
    higher rpm in-line 6 (300's) and 0-40 in my 380SEC.   If you go to
    the Mobil1 website and select the 'help me decide' option for oil
    based on vehicle make model and year it will offer you the correct
    selection.

    

    I checked with another group (mercedeslist.com) sometime ago re: the
    300's and while not listed as recommended by Mobil1, I have been
    using the 15-50 now for many years on this particular engine type. 
    If you choose to use this viscosity, please check the low ambient
    air temp for your area to be sure it is within spec's for use with
    this oil.  So far, it seems a good choice after several 300e's and
    se's with high mileage and typically no less than 100k that I have
    added.  All told maybe 4-500k miles.

    

    -\Dick

    

    

    On 11/15/2010 12:29 AM, Mark - FosterFirst wrote:
    
      
      
      
      
        Hi Legs ( & Markus ), 
           
        Sounds logical and I am going to start using
            synthetic. I have a 1982 380SEC. Any suggestions as to which
            multi-viscosity grade would be best for this engine – as it
            is not a 560SEC. Would there be any difference ? 
           
        Many thanks, 
           
        Mark 
           
           
           
        
          
            From:
                mbcoupes-bounces at mbcoupes.com
                [mailto:mbcoupes-bounces at mbcoupes.com] On Behalf Of
                190girl

                Sent: November-14-10 8:35 PM

                To: mbcoupes at mbcoupes.com

                Cc: E D R

                Subject: Re: [W126 Coupe] Oil change 
          
        
           
        
          For Ronny and Other
              Owners, 
          I wholeheartedly agree
              with Markus and his recommendation on the use of synthetic
              motor oils in the older classic Mercedes-Benz.   My
              comments are based on my experience with the Mobil 1
              family of synthetic lubricants, however, I am sure users
              of synthetics from other manufacturers such as Amsoil or
              Castrol can share similar positive experiences. 
           Having  been fortunate
              enough to own and maintain numerous classic Mercedes-Benz,
              including perhaps the finest OEM 1991 560 SEC in the
              United States, as well as other high lines, I can attest
              to the excellent performance of synthetics in my fleet
              which spans model years from 1975 to the present. 
           In the case of older
              vehicles Mobil 1 offers several multi-viscosity
              grade oils specifically for higher mileage vehicles
              ranging from 5W-30 to 10W-40.   Ironically, these oils
              serve to mitigate problems caused by the use of
              conventional motor oils.. 
           From the
              ExxonMobil literature: “Mobil 1 can help increase
                the life of all engines, even those in older vehicles
                and/or with high mileage. The extra cleaners in Mobil 1
                can help clear stuck rings to help restore engine
                efficiency. In fact, Mobil 1 with SuperSynTM 10W-30 is
                ideal for these applications. Keep in mind, however,
                that Mobil 1 cannot correct an existing engine problem.” 
           “As your engine
              ages, seals
                deteriorate, oil burn-off increases and sludge
              can build up, which can all result in a decrease in engine
                performance and, ultimately, reduce engine life. Mobil 1
                High Mileage 10W-30 motor oil is designed to maximize
                engine performance and help extend engine life.” 
           The Mercedes-Benz 560 SEC is quite an impressive
              piece of engineering.  To consider using conventional oil
              in such a marvel of automotive finesse, and even throwing
              in a few facts from GM, is like comparing roadside diner
              burger (mystery) meat vs haute cuisine filet mignon.    In
              my many years of owning fine automobiles and using
              synthetics for any age of vehicle, I have never had ANY
              engine problems, not even something as minor as occasional
              oil drips.    By the way, Mobil 1 has been around since
              1974, which makes the brand older than many of the
              vehicles in this forum. 
           To summarize my experience and recommendations,
              use synthetic oil without reservation in your 1987 560
              SEC.  It will forgive years of using conventional
              lubricants and improve engine protection and performance
              for many years maximum cruising pleasure. (And who doesn't
              like THAT?)  :) 
            
          To read more about Mobil 1 here are some useful
              links: 
          https://www.mobiloil.com/USA-English/MotorOil/Oils/Mobil_1.aspx 
          https://www.mobiloil.com/USA-English/MotorOil/Oils/Mobil_1_High_Mileage_10W-30.aspx 
            
          Kind regards, 
          Star Cruiser 
          Legs 
            
            
            
            
            
            
        
        

          

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