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  1. #1
    Forum User Standaman94's Avatar
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    Jan 2015
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    Colchester, Essex
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    Best Oil Viscosity?

    What do you find is the best grade oil to use in a Williams?

    And do you use semi/fully synthetic?

  2. #2
    Any good quality 10w40 semi synthetic is the 1 to have, fully synthetic usually makes these engines rather noisy & tappety


 

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