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Thread: the best 10w 40 oil to use on zlet

  
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    mart_gsi_turbo's Avatar
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    the best 10w 40 oil to use on zlet

    as above whats the best 10w 40 oil to use on the zlet engine
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    Amsoil fully synth, I used to use it but got engine issues so just running vaux 10w40 semi atm
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    Most fully synthetic oil will do the job especially if your engine is standard. Most on here will say go with GM's own.
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    amsoil or silkoline if it must be 10w-40! fully synthetic

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    andys sri-t's Avatar
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    i dont know which is the best but for value for money you cant beat the gm 10/40 oil iv run my z20let on it for 8 months and no probs.

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    ive been using castrol gtx magnatec for the past few years on my corsa's. would this be a good choice for my astra gsi mk 4 or not. ive always thought it was quite good thats all and nobody seems to have mentioned it yet.

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    I used to put 5w40 fullt synth in my old zlet

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    vauxhall has told me to use 5w 30 fully synthetic shell i use this or stick 2 10w 40
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    5w-30 is too thin for the zlet and i personally wouldnt put a semi synthetic in there either but thats my opinion! semi doesnt offer long term protection like a fully synthetic does! dont forget, with oils you get what you pay for!

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    I use 10 40 castrol magnatec.
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