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  1. TURBOTRONICS

    TURBOTRONICS Member

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    could i use castrol 10w40 oil in my s4 v8
    i know i should use 5w40 but its on special at my local supermarket
     
  2. hades-

    hades- Yorkshire & Humber Rep. Regional Rep VCDS Map User

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    use what you want its your car
    but if you KNOW you should use 5w/40 dont you think you should use it ?
     
  3. TURBOTRONICS

    TURBOTRONICS Member

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    whats the difference between them
     
  4. scott b

    scott b Active Member VCDS Map User

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    10W is slightly thicker oil, so when cold it will take a little longer to get round the engine
     
  5. Avant4me

    Avant4me The're Graphite not black!!

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    Why run a V8 but worry about the oil on special offer??
     
  6. cobraBLACK

    cobraBLACK Chocolate? It's doo-doo, baby!

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  7. quattrojames

    quattrojames Moderator Staff Member Moderator Audi A6 Audi Avant Owner Group

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    That was my first thought - I think you owe it to your car to run it on what it deserves rather than what the local supermarket has on offer....
     

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