[W126 Coupe] Oil change

[Dean Slone]

 Dick suggested we goto the Mobile1 website and let them "help me decide".  I tried it at the site suggested by Legs

https://www.mobiloil.com/USA-English/MotorOil/Oils/Mobil_1.aspx

and as at many sites, my Grey Market 1981 500SEC is not listed.  Parts sites, repair sites and now Mobil Oil.  They just do NOT recognize the fact that many early 500SEC's are in the USofA.

Very frustrating.



Dean





  ----- Original Message ----- 
  From: Dick Spellman 
  To: Mercedes Coupes Mailing Lists 
  Sent: Monday, November 15, 2010 6:49
  Subject: Re: [W126 Coupe] Oil change


  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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