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Engine oil

Discussion in 'Problems, Fixes, Tips...' started by aracaris, Sep 30, 2013.

  1. aracaris

    aracaris Copenworld Newbie

    Joined:
    Sep 17, 2013
    Car(s):
    Copen roadster
    Hi all

    I have been informed by my Copens previous owner that it has been run on fully synthetic 10 40w oil. I realise the manual states 5 30w semi synthetic. Is it ok running on this spec of oil? Would you revert back to semi 5 30W or keep it on the same spec as the oil change is looming in the next 400 mile.
    Appreciate your thoughts/views:rolleyes:
     
  2. Adam K

    Adam K Copenworld Guru

    Joined:
    Oct 27, 2010
    Location:
    Worcester, UK
    Car(s):
    Nissan Cube Kaizen
    Give it an engine flush & fill with the correct 5W30 oil.
     
  3. trustafox

    trustafox Copenworld Guru

    Joined:
    Nov 19, 2012
    Location:
    East Mids
    Car(s):
    Yes
    5w30 is probably good for a short service interval. As oils degrade their viscosity rating decreases so an old 5w30 might become 5w20 5w10. The 10w40 will become a 10w30 so its still in spec. But this might be less of an issue for 3000 miles oil changes.

    I didn't see a fully syn 10w40 in Halfords but they do a fully syn 5w40. The 5w will give you better cold start protection but maintain high viscosity at operating temperature.
     
  4. trustafox

    trustafox Copenworld Guru

    Joined:
    Nov 19, 2012
    Location:
    East Mids
    Car(s):
    Yes
    It should be noted that engine flushes can dislodge blobs of deposits and potentially block oil channels. Many people do not recommend them. The more regular a car has an oil change so deposits don't build up I think the safer you are, rather than one which can have a tar pits big enough to drag preserved mammoths out of.
     
    Last edited: Oct 1, 2013
  5. Number6

    Number6 Copenworld Veteran

    Joined:
    Apr 25, 2013
    Location:
    Dublin
    Car(s):
    2005 0.7L Copen
    Particularly metal - which is why I have about 5 rare earth magnets duct taped next to the side of the sump plug. Something I've done for a few years, and it's always done me proud.
     
  6. trustafox

    trustafox Copenworld Guru

    Joined:
    Nov 19, 2012
    Location:
    East Mids
    Car(s):
    Yes
    yes I've done that also. Think I have one on the Copen as we speak. I've also added one to the side of an oil filter also.
     

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