The oil used in earlier Vauxhalls was 10w/40, which was one of your mechanics suggestions.
I've known others use this grade on Vauxhalls of similar age to your daughters when they start using oil / have done high mileages.
The 5w/30 is a long life oil, to give longer service intervals. It's also a fully synthetic oil, whereas the 10w/40 is semi synth.
Can you confirm which oil warning light is coming on? i.e. pressure, or low level?
Last edited by: VxFan on Wed 29 Aug 18 at 10:40
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