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Discussion Starter · #1 ·
Hello,I have a Zafira A petrol with engine Z16 XE. This was registered first time in May 2005, during the "crossover from A to B" period. So far it has done 73,000 miles.I did numerous searches on the oil websites, and they all have different answers which "suit" their own products.For eg. Shell says use 10 w 40, Mobil 1 says use 0 w 30, Opie oils says use 4 w - 40.Vauxhall head office first said 5 w 40! When I went to the dealer to buy it, they said 5 w 40 will be a disaster for your engine. So I called up HQ again to hear a different answer again!My fuddy duddy mechanic says, he used and will use 10- 40 always in my car. He charges £ 50 for oil change, so I think I will better do it myself.1. Anyone knows what is the correct oil grade for my engine? I think z16 XE engine is not unique to Zafira A, and perhaps other Vauxhall model owners can give inputs as well.2. What longterm can happen to my car, if I did use 5 w 40 oil?thanks
 

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i have a bottle here GM genuine it says 10w 40 semi synthectic </font>i buy it from vauxhall my mate in parts says they onlyuse semi for most models only certain models use fully i fix cars for a living and for whatever vauxhall im working on its always semi they send me</font>
Edited by: markyv1968
 

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Discussion Starter · #6 ·
Oh dear lads, I already ordered Castrol Magnatec 5 w 30 Full of GM LL A 25 specs.
Is it a disaster?
 
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