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Thread: Is it ok to use 10W 40 in Z20LET?

  
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    Is it ok to use 10W 40 in Z20LET?

    Went vaux today brought stuff needed for oil change. Stupidly dint check oil, which i thought to do bout thousand times anyway drained out old oil (5w 30) and then realised he's given me semi synthetic 10w 40. Im at work so have had to put it in to get home. I was gonna buy the right stuff tomo and re change it again as ive left the old filter on. Should i do this or will it be ok to leave. Last changed 5k miles ago.
    Regal Phase 1 + Intercooler
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    Well thats what vauxhall have always put in mine.... But it dont last long before colour changes and its really pants oil....
    Arden Astra GSI - Phase 3.5

    EDS Phase 3.5 288 BHP 340 FT/LB

    Inlet cam and Dbilas manifold.

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    strange, cos up until today my garage has always given me 5w 30, only today the cahp made a mistake.
    Regal Phase 1 + Intercooler
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    I've seen on courtneys site about the warrenty on a VXR turbo and it says you have to use 10w40 oil for the warrenty to be valid
    SMIC, miltek catback, precat, Thorney remap 242.7 bhp 281lb/ft torque

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    Quote Originally Posted by dazerc View Post
    I've seen on courtneys site about the warrenty on a VXR turbo and it says you have to use 10w40 oil for the warrenty to be valid
    but isnt that full synthetic,not semi

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    Quote Originally Posted by welsh-andy View Post
    but isnt that full synthetic,not semi
    I think that is the case.

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    Yup it sure is... But the 5-30 is too thin so that would void it too. Do a search on what oil your find loads of info....
    Arden Astra GSI - Phase 3.5

    EDS Phase 3.5 288 BHP 340 FT/LB

    Inlet cam and Dbilas manifold.

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    Quote Originally Posted by Burtdick View Post
    Went vaux today brought stuff needed for oil change. Stupidly dint check oil, which i thought to do bout thousand times anyway drained out old oil (5w 30) and then realised he's given me semi synthetic 10w 40. Im at work so have had to put it in to get home. I was gonna buy the right stuff tomo and re change it again as ive left the old filter on. Should i do this or will it be ok to leave. Last changed 5k miles ago.
    Definately 10w40 for the z20let chap...! 110% certain

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    Y for the last 2 times ive changed it myself have they given me 5w 30 over the parts counter then? All im worried about is ruiunin the turbo as its done 51k now and some of that running phase 1 etc. And its driven hard most days.
    Regal Phase 1 + Intercooler
    270BHP 300ftlb And Nothing Else, All standard

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    If you just need to get home then the 10W40 semi will be fine.

    Personally, I think the 5W30 is a little thin too - it pished straight through my turbo on the DTi, 5 litres gone in 1000 miles. I used the 5W30 Vauxhall stuff in my Corsa, and it galloped it too, despite being only a 1.2 and having less than 10k on the clock.

    I'm using a 5W40 fully synthetic now, and it's been good so far. It's Carlube TripleR 5W40 (about £40 for 5 litres). I've also found Silkolene Pro-S 10W40 to be pretty good.
    2007 Metro Blue 5 door Mk5 Elite 1.7CDTI
    6th Vauxhall (4th Astra) in 10 years...plus a couple of other sheds...

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