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  1. M

    Rimula 15w40 or 5w40 synth?

    Hello Johnny, Thanks for the reply and for your offer to contact shell in the US. I already rang Shell UK (after my initial post here) they said to use oil to ACEA B3 and that their fully synthetic 5w40 was the best for my applications. I was puzzled about that and (viscosity aside) could not...
  2. M

    Rimula 15w40 or 5w40 synth?

    Hello to Group, We have 2 Fiat 1910cc passenger car diesels here in the UK. 2002 models. One is indirect injection, the other common rail with a turbocharger. Both have EGR. Fiat Oil spec is ACEA B3 Semi Synthetic 10w 40 for both. or 5w40 to CF at below -15c The question is specifically about...
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