Oil Suggestions | The Z Club of Great Britain
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Oil Suggestions

Discussion in 'General discussion' started by 4683kelly, Mar 18, 2017.

  1. 4683kelly

    4683kelly
    Z Club Member

    Can someone recommend which engine oil, gear oil and rear diff oil I should use for my 1972 240Z and how much of each I will need? Thanks
     
  2. Jimbo

    Jimbo 1978 260z in yellow

    i did some research on this recently and this is generally wat i found.
    engine oil commonly used seems to be a 10/40 semi synthetic or 20/50 millers oil
    gearbox GL4 only gear oil
    rear diff GL5 gear oil.

    all seems to depend on your cars mod and wear state.

    im using 15/40 semi synthetic engine oil
    in my gearbox im using 75/90 ep gear oil that says on the bottle suitable for GL4 applications
    and i havent got around to doing the diff yet but i will probably use the same as the gearbox oil unless some one recomends something better.
     
  3. toopy

    toopy
    Z Club Member

    Agreed,

    GL4 gear oil 75w90 for gearbox, not the GL5 stuff that is labelled as GL4 compatible as it can still negatively affect the syncro operation

    http://www.commaoil.com/passenger-vehicles/products/view/181

    GL4 EP (not all GL4 is necessarily EP) or better GL5 75w90 for the diff, all GL5 appears to be EP anyway, thats Extreme Pressure by the way :)

    L24 engine uses 4.7 litres of oil
    L26 is 5.1 litres

    Gearbox is 1.5 to 1.7 litres depending on gearbox type

    Diff is 1 litre
     
    Last edited by a moderator: Mar 18, 2017
  4. Josh

    Josh New Forum User

  5. jonbills

    jonbills
    Z Club Member

    Yeah Comma are fine.
     
  6. Woody928

    Woody928
    Z Club Member

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