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Mazda 6 1.8 engine oil

  • 28-01-2013 7:20pm
    #1
    trabpc
    Registered Users, Registered Users 2 Posts: 943 ✭✭✭


    2006 Mazda 6 1.8 petrol 129000 kms, I got 5w-40 oil from garage today. Is this correct oil.... Fully synthetic?


Comments

  • #2
    mondeoman2
    Registered Users, Registered Users 2 Posts: 619 ✭✭✭mondeoman2


    trabpc wrote: »
    2006 Mazda 6 1.8 petrol 129000 kms, I got 5w-40 oil from garage today. Is this correct oil.... Fully synthetic?


    According to Autodata is should be 5w30 (4.3 litres)semi synthetic


  • #3
    Wheelnut
    Registered Users, Registered Users 2 Posts: 977 ✭✭✭Wheelnut


    trabpc wrote: »
    ... 5w-40 oil from garage today. Is this correct oil.... ?

    Probably, I can't see anything wrong with it.

    (PS: the hand book might say 5w30 for fuel economy but 5w40 is OK, especially at that mileage).


  • #4
    bazz26
    Registered Users, Registered Users 2 Posts: 51,363 ✭✭✭✭bazz26


    Castrol concur with that:

    http://www.castrol.com/castrol/sectionbodycopy.do?categoryId=9024084&contentId=7073092


  • #5
    trabpc
    Registered Users, Registered Users 2 Posts: 943 ✭✭✭trabpc


    Tks lads. Should have said mazda main dealer gave it to me. Should I replace it for the 5w30. What the difference in the two?


  • #6
    Nissan doctor
    Closed Accounts Posts: 8,223 ✭✭✭Nissan doctor


    A 5w40 oil is fine for that engine in our climate. Mazda list either a 5w30 or a 10w40 however Ford list a 5w40 as suitable for the same engine in their models.

    These engines are prone to oil burning so using good quality oils is essential.


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  • #7
    careful_now
    Registered Users, Registered Users 2 Posts: 60 ✭✭careful_now


    OP, I have the same car and same year, how do you find it on petrol?


  • #8
    trabpc
    Registered Users, Registered Users 2 Posts: 943 ✭✭✭trabpc


    Only havre few days. Long trip tomorrow so ill report back then.


  • #9
    trabpc
    Registered Users, Registered Users 2 Posts: 943 ✭✭✭trabpc


    Mazda garage in kildare gave me 5w40.

    Mazda in Tallaght said 5w30 so me thinks ill change based on this, and advice here.


  • #10
    Wheelnut
    Registered Users, Registered Users 2 Posts: 977 ✭✭✭Wheelnut


    trabpc wrote: »
    ... What the difference in the two?

    All multigrade oils start off as single grade (straight) oils and are chemically stretched to make them behave like heavier oil at high temperatures. In this case both oils are basically 5 grade. The 5w30 oil is a 5 grade oil that behaves like a 30 grade oil at high temperatures. The 5w40 oil is a 5 grade oil that behaves like a 40 grade oil at high temperatures. I would have no hesitation putting 5w40 oil in that Mazda engine.


  • #11
    Nissan doctor
    Closed Accounts Posts: 8,223 ✭✭✭Nissan doctor


    Wheelnut wrote: »
    All multigrade oils start off as single grade (straight) oils and are chemically stretched to make them behave like heavier oil at high temperatures. In this case both oils are basically 5 grade. The 5w30 oil is a 5 grade oil that behaves like a 30 grade oil at high temperatures. The 5w40 oil is a 5 grade oil that behaves like a 40 grade oil at high temperatures. I would have no hesitation putting 5w40 oil in that Mazda engine.


    With modern engines, the grade is only one part of the requirements though.


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  • #12
    Wheelnut
    Registered Users, Registered Users 2 Posts: 977 ✭✭✭Wheelnut


    Nissan doctor wrote: »
    With modern engines, the grade is only one part of the requirements though.

    I could not agree more! I have a diesel that must get ACEA C3 oil, otherwise it will fu(k up the DPF. However, he only asked about the difference in grades and I tried to keep it non technical.


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