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Thread: Oil change

  
  1. #1
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    john24susan's Avatar
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    Oil change

    Hi all,I have just purchaced a Astra 1.7 Diesel CTDI 2004 mark 5 which has a full service history for my daughter whick has covered 90,0000 miles, it has been well looked after as I know the previous owner.
    I am about to give it the once over and an oil change and see that Vauxhall recomends Sinthetic oil for this engine , The previous owner thinks it was a Semi -Sinthetic oil used in the service previous.
    My question is If Semi -Sinthetic oil had been used previously will it be ok to run the car on Fully Sinthetic oil ?
    My local auto shop have offered me AC Delco oil 5-40 . at a price of £18 per 5l which I thought was very cheep !
    Has anyone used this type of oil and how did they find it ?
    Many Thanks

  2. #2
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    nry's Avatar
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    If you join AOC fully, you'll get 5Litres of Vauxhall 10w/40 semi synth for £11 and an oil filter and sump washer for about £1.50.

    Vauxhall would likely recommend semi-synth but a fully synth of the correct specification would be 'better' assuming it's a decent fully synth.

    Checkout www.opieoils.co.uk, 10% off if you join as an AOC forum member.

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    The 1.7 cdti uses 5/30 fully synth.

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    many thanks for your info

  5. #5
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    nry's Avatar
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    Quote Originally Posted by kingsblue View Post
    The 1.7 cdti uses 5/30 fully synth.
    You sure? Website I normally use tells me it is 5w/40.

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