>> Thanks for all your responses.
>> I did use a Halfords 10W/40 part synthetic
IIRC, Comma also make oil for Halfords too.
>> Currently using a Halfords 5w/30 fully synthetic, seems to be working a bit longer.....
That's odd. On a Vauxhall forum I read, there are suggestions to swap from 5w/30 to 10w/40 with higher mileage engines that use oil because the 10w/40 grade is slightly thicker.
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