Just had my 2 year old (pre face lift) SRi 3.0 CDTi serviced. It's an estate so don't know if it has a DPF or not (and don't know if that impacts on what oil it should have).
The invoice states they used S/Syn (semi synthetic??) 10/40W.
Is that the correct oil, as my hand book says GM-LL-B-025 0/30, 0/40, 5/30, or 5/40 no mention of 10/40??
Thanks
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