Vauxhall Astra H - 07 1.6 Oil light comes on on long runs - smokie
I don't get to see the car very often, bit she has changed the story now and apparently it is losing (but not visibly leaking) oil. She has taken it to a local mechanic but I've not yet heard his verdict. .
I didn't get round to ordering the part either but I am going to so I can do it in her next visit. Not likely till October now...