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Thread: Castrol GTX and Castrol GTX Magnatec - Help please

  
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    Question Castrol GTX and Castrol GTX Magnatec - Help please

    Hi all,

    I've done a some looking on this site trying to find an answer to my question about...

    Is castrol GTX 10w40 (in the white bottle) a semi synthetic oil?

    And is there much difference between the GTX magnatec 10w40? also is this a semi synthetic or fully synthetic oil?

    Thanks for the help in advance guys.

    Dave.
    Astra G Convertible 1.8

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    white gtx is mineral. there is a big difference in the way the 2 oils protect your engine, but the viscosity is the same (how runny and how hot it can get ) magnatec contains additives to stop cold start damage and tbh is a really decent drop of oil. ( i didn't work in a motor factor in cwmbran for 5 years for nothing! lol!)

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    jam's Avatar
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    Follow jam On Twitter
    Find the posts made by a member called Oilman theres alot of info so read through carefully.

    jam
    Its a jam thing

    Haec credam a deo pio, a deo justo, a deo scito?



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    so the white GTX is a mineral semi synthetic oil.. ???

    I've looked at oilman's posts and the web site but still unsure.. can't they just put big stickers on the oil saying semi and fully synthetic.. lol

    At least i know what i am doing when it computers computers..lol
    Astra G Convertible 1.8

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    techsteve's Avatar
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    Why the question about the oils ? ( out of interest )
    HIGHDOWN Car Audio & Security
    Clifford, Genesis, Rockford, CDT Audio

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    Quote Originally Posted by Digital Dreamer
    so the white GTX is a mineral semi synthetic oil.. ???

    I've looked at oilman's posts and the web site but still unsure.. can't they just put big stickers on the oil saying semi and fully synthetic.. lol

    At least i know what i am doing when it computers computers..lol
    no the white gtx is just mineral based oil NOT any form of semi-synthetic

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    its time for an oil change... but as you might have guessed the workings of cars is not one of my hot topics so i won't be doing it myself.... but i got to suply the parts for it to be done.
    Astra G Convertible 1.8

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    arrr so i don't want the white GTX.

    I am lookin g to put semi in it again as it had it before... so which castrol oil is a semi-synthetic?
    Astra G Convertible 1.8

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    magantec is 10w40 is the viscosity you want. pop down to george fords in crawford street. or go to welch's (evans halshaw now?) and see mike in parts and get some genuine vx 10w40 semi.

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    thanks sri19
    Astra G Convertible 1.8

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